[9.0] [CI] Fix missing kbn-monaco dep setup (elastic#235234) (elastic#235261)

# Backport

This will backport the following commits from `main` to `9.0`:
- [[CI] Fix missing `kbn-monaco` dep setup
(elastic#235234)](elastic#235234)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Alex
Szabo","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-09-16T18:38:52Z","message":"[CI]
Fix missing `kbn-monaco` dep setup (elastic#235234)\n\n## Summary\nSimilar to
elastic#234593 this PR adds\ndependency
setup manually to `@kbn/monaco` to avoid bad cache
getting\nstuck.\n\n(also removes a
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Fix missing `kbn-monaco` dep
setup","number":235234,"url":"https://github.com/elastic/kibana/pull/235234","mergeCommit":{"message":"[CI]
Fix missing `kbn-monaco` dep setup (elastic#235234)\n\n## Summary\nSimilar to
elastic#234593 this PR adds\ndependency
setup manually to `@kbn/monaco` to avoid bad cache
getting\nstuck.\n\n(also removes a
duplication)","sha":"3a72a562b8c960c821d231ec415cc68cdbfe734f"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.2.0","branchLabelMappingKey":"^v9.2.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/235234","number":235234,"mergeCommit":{"message":"[CI]
Fix missing `kbn-monaco` dep setup (elastic#235234)\n\n## Summary\nSimilar to
elastic#234593 this PR adds\ndependency
setup manually to `@kbn/monaco` to avoid bad cache
getting\nstuck.\n\n(also removes a
duplication)","sha":"3a72a562b8c960c821d231ec415cc68cdbfe734f"}}]}]
BACKPORT-->

Co-authored-by: Alex Szabo <[email protected]>

Author: kibanamachine

src/platform/packages/private/kbn-ui-shared-deps-src/moon.yml

@@ -36,7 +36,6 @@ tasks:
     inputs:
       - '@group(src)'
       - 'webpack.config.js'
-      - '@group(src)'
       - '/src/platform/packages/shared/kbn-repo-info/**/*.{js,ts,tsx}'
       - '/src/platform/packages/shared/kbn-ui-theme/**/*.{js,ts,tsx}'
       - '/src/platform/packages/shared/kbn-i18n/**/*.{js,ts,tsx}'

src/platform/packages/shared/kbn-monaco/moon.yml

@@ -26,10 +26,15 @@ tasks:
   build-webpack:
     command: yarn
     args:
-      - 'build'
+      - build
     inputs:
       - '@group(src)'
-      - 'webpack.config.js'
+      - webpack.config.js
+      - /src/platform/packages/shared/kbn-esql-ast/**/*.{js,ts,tsx}
+      - /src/platform/packages/shared/kbn-esql-types/**/*.{js,ts,tsx}
+      - /src/platform/packages/shared/kbn-esql-validation-autocomplete/**/*.{js,ts,tsx}
+      - /src/platform/packages/shared/kbn-i18n/**/*.{js,ts,tsx}
+      - /src/platform/packages/shared/kbn-repo-info/**/*.{js,ts,tsx}
     outputs:
       - /target/build/src/platform/packages/shared/kbn-monaco
   watch-webpack:
@@ -39,6 +44,6 @@ tasks:
     command: yarn
     args:
       - build
-      - --watch
+      - '--watch'
     outputs:
       - /target/build/src/platform/packages/shared/kbn-monaco