apollo_deployments: delete base app_configs and the preset-parity test machinery

jsonnet build() is the sole source of the node config, so the committed base
app_configs/*_config.json and the build()-vs-app_configs parity test are dead.
Delete the 21 base *_config.json, merged_app_configs/non_default_paths/
test_applicative_matches_app_configs and the applicative_matches_app_configs test,
plus their last-user constants KEYS_TO_BE_REPLACED and BASE_APP_CONFIGS_DIR_PATH
(and the now-dead get_component_config_{names,file_paths}), and drop the freed phf
dep. Keep CONFIG_POINTERS/dump()/config_to_preset definitions and the
build_*_deserializes + *_infra_matches_rust guards (later phases own those).

apollo_deployments 8/8 green; cdk8s synth 31/31 green (build() sole source).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: nimrod-starkware

Cargo.lock

@@ -14,7 +14,6 @@ apollo_config.workspace = true
 apollo_infra.workspace = true
 apollo_infra_utils.workspace = true
 apollo_node_config.workspace = true
-phf = { workspace = true, features = ["macros"] }
 serde.workspace = true
 serde_json.workspace = true
 static_assertions.workspace = true