YARN-11873. Add yarn.lock for app catalog webapp

[MikaelSmith]

Description of PR

JIRA: YARN-11873. Add yarn.lock for app catalog webapp

Adds a yarn.lock to ensure reproducible npm builds with hadoop-yarn-applications-catalog-webapp.

How was this patch tested?

Compiled the module. This just preserves the file that's already generated.

For code changes:

• Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
• Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
• If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 36s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	detsecrets	0m 0s		detect-secrets was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
			_ trunk Compile Tests _
+1 💚	shadedclient	38m 39s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	shadedclient	34m 10s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	asflicense	0m 39s		The patch does not generate ASF License warnings.
		75m 50s

Subsystem	Report/Notes
Docker	ClientAPI=1.51 ServerAPI=1.51 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8020/1/artifact/out/Dockerfile
GITHUB PR	#8020
Optional Tests	dupname asflicense codespell detsecrets
uname	Linux 72e5f0776f34 5.15.0-152-generic #162-Ubuntu SMP Wed Jul 23 09:48:42 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 0c33c18
Max. process+thread count	759 (vs. ulimit of 5500)
modules	C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-catalog/hadoop-yarn-applications-catalog-webapp U: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-catalog/hadoop-yarn-applications-catalog-webapp
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8020/1/console
versions	git=2.25.1 maven=3.9.11
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[slfan1989]

@iwasakims Could you please help review this PR? Thank you very much!

[slfan1989]

@MikaelSmith Thanks for the contribution! Merged into trunk.

[slfan1989]

@MikaelSmith Could we also submit this PR to the branch-3.4?