Handle .exe extension if guessing path to Windows native executable

[rquinio]

Follow-up on #7663, after experimenting with GraalVM on Windows.

This is the symmetric when running a NativeImageTest from the IDE of

quarkus/core/deployment/src/main/java/io/quarkus/deployment/pkg/steps/NativeImageBuildStep.java

Lines 346 to 349 in 7f6ef81

	if (IS_WINDOWS && !(nativeConfig.containerRuntime.isPresent() || nativeConfig.containerBuild)) {
	//once image is generated it gets added .exe on Windows
	executableName = executableName + ".exe";
	}

that is used when launching the ITs from Maven.

======================================================================================
  native.image.path was not set, making a guess for the correct path of native image
  guessed path: C:\git_clones\quarkus\integration-tests\kafka\target\quarkus-integration-test-kafka-999-SNAPSHOT-runner.exe
======================================================================================

[geoand]

Seems reasonable to me, but would you be able to verify it @jaikiran ?

[jaikiran]

This change looks fine to me.

[geoand]

Thanks for this