11/11: test(completions): reenable tests, update snapshots, just readied (#660)

## Summary
- Update all completion snapshots for keyword completions
- Update grammar test snapshots for field name output
- Remove #[ignore] attributes from tests
- Update test helper

## Part of stacked PRs for #629

This is PR 11/11 in the keyword completion feature stack.

---------

Co-authored-by: JulesWritesCode <julian.rechnungen@outlook.de>

Author: juleswritescode

STACKED_PR_PLAN.md

@@ -93,7 +93,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn shows_multiple_columns_if_no_relation_specified(pool: PgPool) {
         let setup = r#"
             create schema private;
@@ -125,7 +124,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn suggests_relevant_columns_without_letters(pool: PgPool) {
         let setup = r#"
             create table users (
@@ -213,7 +211,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn filters_out_by_aliases_in_join_on(pool: PgPool) {
         let setup = r#"
             create schema auth;
@@ -281,7 +278,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn does_not_complete_cols_in_join_clauses(pool: PgPool) {
         let setup = r#"
             create schema auth;
@@ -310,7 +306,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn completes_in_join_on_clause(pool: PgPool) {
         let setup = r#"
             create schema auth;
@@ -385,7 +380,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn suggests_columns_in_insert_clause(pool: PgPool) {
         let setup = r#"
             create table instruments (
@@ -423,7 +417,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn suggests_columns_in_where_clause(pool: PgPool) {
         let setup = r#"
             create table instruments (
@@ -456,7 +449,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn suggests_columns_in_alter_table_and_drop_table(pool: PgPool) {
         let setup = r#"
             create table instruments (
@@ -531,7 +523,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn completes_quoted_columns(pool: PgPool) {
         let setup = r#"
             create schema if not exists private;
@@ -553,7 +544,6 @@ mod tests {
     }
 
     #[sqlx::test(migrator = "pgls_test_utils::MIGRATIONS")]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn completes_quoted_columns_with_aliases(pool: PgPool) {
         let setup = r#"
             create schema if not exists private;

crates/pgls_completions/src/providers/columns.rs

@@ -535,7 +535,6 @@ mod tests {
     }
 
     #[sqlx::test]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn completes_after_from_clause(pool: PgPool) {
         let setup = r#"
             create table public.users (
@@ -598,7 +597,6 @@ mod tests {
     }
 
     #[sqlx::test]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn completes_from_keyword(pool: PgPool) {
         let setup = r#"
             create table public.users (
@@ -622,7 +620,6 @@ mod tests {
     }
 
     #[sqlx::test]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn completes_from_keyword_after_aliases(pool: PgPool) {
         let setup = r#"
             create table public.users (
@@ -668,7 +665,6 @@ mod tests {
     }
 
     #[sqlx::test]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn completes_keywords_after_column_aliases(pool: PgPool) {
         let setup = r#"
             create table public.users (
@@ -784,7 +780,6 @@ mod tests {
     }
 
     #[sqlx::test]
-    #[ignore = "will be reintroduced after stacked keyword-completion PRs merge"]
     async fn completes_join_after_alias(pool: PgPool) {
         let setup = r#"
             create table public.users (