Enable path mapping for `java_single_jar`.

PiperOrigin-RevId: 976671582
Change-Id: Iea495cd4e2302010aaf0b5943c05b3ab527792f9

java/common/rules/java_single_jar.bzl

diff --git a/java/common/rules/java_single_jar.bzl b/java/common/rules/java_single_jar.bzl
index 54e9f28..e36c1b7 100644
--- a/java/common/rules/java_single_jar.bzl
+++ b/java/common/rules/java_single_jar.bzl
@@ -94,6 +94,9 @@
         progress_message = "Merging into %s" % ctx.outputs.output.short_path,
         mnemonic = "JavaSingleJar",
         executable = ctx.executable._singlejar,
+        execution_requirements = {
+            "supports-path-mapping": "1",
+        },
         use_default_shell_env = True,
     )
 

test/java/common/rules/java_single_jar_tests.bzl

diff --git a/test/java/common/rules/java_single_jar_tests.bzl b/test/java/common/rules/java_single_jar_tests.bzl
index bc08520..c2237e7 100644
--- a/test/java/common/rules/java_single_jar_tests.bzl
+++ b/test/java/common/rules/java_single_jar_tests.bzl
@@ -52,8 +52,7 @@
     if output_path_mode == "off":
         return "{bindir}"
     elif output_path_mode == "strip":
-        # TODO(b/554023226): use "{cfg_stripped_bindir}" once java_single_jar opts into path stripping
-        return "{bindir}"
+        return "{cfg_stripped_bindir}"
     fail("unexpected output path mode: " + output_path_mode)
 
 def _test_java_single_jar_basic(name):