Flip building transitive python runfiles to false

No issues were reported in the tracking issue.

Fixes #16303

RELNOTES[INC]: --experimental_build_transitive_python_runfiles is flipped to false. See #16303 for details

PiperOrigin-RevId: 503519003
Change-Id: I8c3650eeb0a739431944598df9d0a6cece3b962c

src/main/java/com/google/devtools/build/lib/rules/python/PythonOptions.java

@@ -236,7 +236,7 @@ public String getTypeDescription() {
 
   @Option(
       name = "experimental_build_transitive_python_runfiles",
-      defaultValue = "true",
+      defaultValue = "false",
       documentationCategory = OptionDocumentationCategory.UNDOCUMENTED,
       effectTags = {OptionEffectTag.LOADING_AND_ANALYSIS, OptionEffectTag.AFFECTS_OUTPUTS},
       metadataTags = {OptionMetadataTag.INCOMPATIBLE_CHANGE},