fix(database): derive BelongsTo FK column from property name instead of table name

When two properties reference the same model (e.g. User $author and
?User $reviewer), getOwnerFieldName() derived both FK columns from
the related table name (user_id), causing the second to overwrite
the first in INSERT data arrays.

Use property name instead: author -> author_id, reviewer -> reviewer_id.
For the common case where property name matches the singularized table
name (Author $author), the result is identical.

Author: laylatichy

packages/database/src/BelongsTo.php

@@ -57,7 +57,7 @@ public function getOwnerFieldName(): string
             throw ModelDidNotHavePrimaryColumn::neededForRelation($relationModel->getName(), 'BelongsTo');
         }
 
-        return str($relationModel->getTableName())->singularizeLastWord() . '_' . $primaryKey;
+        return str($this->property->getName())->snake() . '_' . $primaryKey;
     }
 
     public function getSelectFields(): ImmutableArray

tests/Integration/Database/ModelInspector/BelongsToTest.php

@@ -35,7 +35,7 @@ public function test_belongs_to_with_relation_join_field(): void
         $this->assertInstanceOf(BelongsTo::class, $relation);
 
         $this->assertEquals(
-            'LEFT JOIN relation ON relation.overwritten_id = owner.relation_id',
+            'LEFT JOIN relation ON relation.overwritten_id = owner.relation_join_field_id',
             $relation->getJoinStatement()->compile(DatabaseDialect::SQLITE),
         );
     }
@@ -48,7 +48,7 @@ public function test_belongs_to_with_relation_join_field_and_table(): void
         $this->assertInstanceOf(BelongsTo::class, $relation);
 
         $this->assertEquals(
-            'LEFT JOIN relation ON overwritten.overwritten_id = owner.relation_id',
+            'LEFT JOIN relation ON overwritten.overwritten_id = owner.relation_join_field_and_table_id',
             $relation->getJoinStatement()->compile(DatabaseDialect::SQLITE),
         );
     }

tests/Integration/Database/ModelInspector/LatinPluralRelationTest.php

@@ -27,7 +27,7 @@ public function belongs_to_with_latin_plural_property_name(): void
         );
 
         $this->assertSame(
-            expected: 'LEFT JOIN metadata ON metadata.id = products.metadata_id',
+            expected: 'LEFT JOIN metadata ON metadata.id = products.product_metadata_id',
             actual: $relation
                 ->getJoinStatement()
                 ->compile(dialect: DatabaseDialect::SQLITE),
@@ -65,7 +65,7 @@ public function latin_plural_belongs_to_uses_fk_in_select_fields(): void
         $fields = $model->getSelectFields()->toArray();
 
         $this->assertContains(
-            needle: 'metadata_id',
+            needle: 'product_metadata_id',
             haystack: $fields,
         );
         $this->assertNotContains(

tests/Integration/Database/ModelInspector/SnakeCaseRelationTest.php

@@ -24,7 +24,7 @@ public function test_belongs_to_with_snake_case_property(): void
             actual: $relation,
         );
         $this->assertSame(
-            expected: 'LEFT JOIN author ON author.id = book.author_id',
+            expected: 'LEFT JOIN author ON author.id = book.main_author_id',
             actual: $relation
                 ->getJoinStatement()
                 ->compile(dialect: DatabaseDialect::SQLITE),