Merge pull request swiftlang#38058 from apple/5.5-unblock-ci-playground-test

Skip playground support test in PR testing (79641780)

Author: shahmishal

utils/build-presets.ini

@@ -629,6 +629,9 @@ swift-primary-variant-arch=x86_64
 # Don't build the benchmarks
 skip-build-benchmarks
 
+# Skip playground tests
+skip-test-playgroundsupport
+
 [preset: buildbot_incremental,tools=RA,stdlib=RD,smoketest=macosx,flto]
 mixin-preset=buildbot_incremental,tools=RA,stdlib=RD,smoketest=macosx
 build-subdir=buildbot_incremental
@@ -1530,6 +1533,9 @@ swiftevolve
 # Build Playground support
 playgroundsupport
 
+# Skip Playground tests
+skip-test-playgroundsupport
+
 # Skip build and test for tvOS
 skip-build-tvos
 skip-test-tvos