Remove customizer mappings from runtime recording Config

[radcortez]

• Fixes Runtime property being resolved at build time #44246

Caused by #42157.

In #42157, we added https://github.com/radcortez/quarkus/blob/9eff425f2b6ad59e6e205b736ce2611417971d60/core/deployment/src/main/java/io/quarkus/deployment/configuration/BuildTimeConfigBuilderCustomizer.java to register the log config which is required in both build time and runtime.

The customizer now applies to the stripped-down version of a config instance we use to record configuration (where we have to remove the system sources):

quarkus/core/deployment/src/main/java/io/quarkus/deployment/configuration/BuildTimeConfigurationReader.java

Lines 1101 to 1110 in ada7e07

	/**
	* Use this Config instance to record the runtime default values. We cannot use the main Config
	* instance because it may record values coming from local development sources (Environment Variables,
	* System Properties, etc.) in at build time. Local config source values may be completely different between the
	* build environment and the runtime environment, so it doesn't make sense to record these.
	*
	* @return a new {@link SmallRyeConfig} instance without the local sources, including SysPropConfigSource,
	* EnvConfigSource, .env, and Build system sources.
	*/
	private SmallRyeConfig getConfigForRuntimeRecording() {

This instance does not require any mappings at all, and it is only used to query configuration names to proceed with the recording.

[quarkus-bot]

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Flaky tests - Develocity

⚙️ JVM Tests - JDK 17

📦 extensions/smallrye-reactive-messaging/deployment

✖ io.quarkus.smallrye.reactivemessaging.hotreload.ConnectorChangeTest.testUpdatingConnector - History

• Expecting actual: ["-4","-5","-6","-7","-8","-9","-10","-11"] to start with: ["-3", "-4", "-5", "-6"] - java.lang.AssertionError

java.lang.AssertionError: 

Expecting actual:
  ["-4","-5","-6","-7","-8","-9","-10","-11"]
to start with:
  ["-3", "-4", "-5", "-6"]

	at io.quarkus.smallrye.reactivemessaging.hotreload.ConnectorChangeTest.testUpdatingConnector(ConnectorChangeTest.java:36)