[9.2.0] Prevent UrlRewriterParseException from being wrapped in RuntimeException (https://github.com/bazelbuild/bazel/pull/28305) (#30212)

When attempting to run a Bazel command, Bazel server will shutdown and
exit with an unexpected error when the [downloader
config](https://bazel.build/reference/command-line-reference#common_options-flag--downloader_config)
is invalid:

```
$ echo "#test\nfoo" > bazel_downloader.cfg
$ cat bazel_downloader.cfg
#test
foo
$ bazel-dev build //... --downloader_config=bazel_downloader.cfg
< exits immediately with the Bazel server killed >
$ echo $?
37
```

`37` corresponds to `Unhandled Exception / Internal Bazel Error` as per
the [docs](https://bazel.build/run/scripts#exit-codes).

This PR introduces changes that will let catch and rethrow
`UrlRewriterParseException` before `Closer.rethrow()` to prevent it from
being wrapped in `RuntimeException`.

```
$ bazel-dev-fixed query //... --downloader_config=bazel_downloader.cfg
...
ERROR: Failed to parse downloader config at bazel_downloader.cfg:2: Unable to parse: foo
$ echo $?
2
```

Closes #28305.

PiperOrigin-RevId: 891501161
Change-Id: I3cbfe2e2cdcad14c6b5e8210e2e1b8e999eba0ae

Commit
https://github.com/bazelbuild/bazel/commit/45ea1f009a76996b32d8eda0bd5f43f958a68293

Co-authored-by: Alexey Tereshenkov <50622389+AlexTereshenkov@users.noreply.github.com>

src/main/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriter.java

diff --git a/src/main/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriter.java b/src/main/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriter.java
index a64f77a..abd7a01 100644
--- a/src/main/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriter.java
+++ b/src/main/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriter.java
@@ -129,7 +129,7 @@
         return new UrlRewriter(
             configPaths.stream().map(PathFragment::getPathString).toList(), readers);
       } catch (Throwable e) {
-        throw closer.rethrow(e);
+        throw closer.rethrow(e, UrlRewriterParseException.class);
       } finally {
         closer.close();
       }

src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriterTest.java

diff --git a/src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriterTest.java b/src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriterTest.java
index 2b50306..9e1c6e3 100644
--- a/src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriterTest.java
+++ b/src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/UrlRewriterTest.java
@@ -261,11 +261,15 @@
   @Test
   public void parseError() throws Exception {
     String config = "#comment\nhello";
+    assertThrows(
+        UrlRewriterParseException.class,
+        () -> testUrlRewriter("/some/file", new StringReader(config)));
     try {
       new UrlRewriterConfig("/some/file", new StringReader(config));
       fail();
     } catch (UrlRewriterParseException e) {
       assertThat(e.getLocation()).isEqualTo(Location.fromFileLineColumn("/some/file", 2, 0));
+      assertThat(e.getMessage()).contains("Unable to parse: hello");
     }
   }