[ci] Remove redundant node_modules/.cache from workflow caches

setup-node already handles node_modules caching when cache: 'npm' is enabled.
Removed conflicting node_modules/.cache entries from:
- .github/workflows/lint-and-format.yaml
- .github/workflows/vitest.yaml
- .github/workflows/test-ui.yaml

This prevents cache conflicts and follows best practices for npm caching.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

.github/workflows/lint-and-format.yaml

@@ -31,7 +31,6 @@ jobs:
           path: |
             .cache
             .eslintcache
-            node_modules/.cache
             tsconfig.tsbuildinfo
             .prettierCache
             .knip-cache

.github/workflows/test-ui.yaml

@@ -71,7 +71,6 @@ jobs:
         with:
           path: |
             ComfyUI_frontend/.cache
-            ComfyUI_frontend/node_modules/.cache
             ComfyUI_frontend/tsconfig.tsbuildinfo
           key: playwright-setup-cache-${{ runner.os }}-${{ hashFiles('ComfyUI_frontend/package-lock.json') }}-${{ hashFiles('ComfyUI_frontend/src/**/*.{ts,vue,js}', 'ComfyUI_frontend/*.config.*') }}
           restore-keys: |

.github/workflows/vitest.yaml

@@ -25,7 +25,6 @@ jobs:
         path: |
           .cache
           coverage
-          node_modules/.cache
           .vitest-cache
         key: vitest-cache-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}-${{ hashFiles('src/**/*.{ts,vue,js}', 'vitest.config.*', 'tsconfig.json') }}
         restore-keys: |