fix: add allowImportingTsExtensions and noEmit to tsconfig

[daichi1998928]

Fix build error during pnpm build

This PR addresses the build error that occurs when running pnpm build.

Changes Made

• Added "allowImportingTsExtensions": true, "noEmit": true to tsconfig.json
• Added ".ts" file extensions to import statements
• To resolve ES Modules errors

Build Error During pnpm build

@vue/devtools-ui:build: error during build:
@vue/devtools-ui:build: Error [ERR_UNSUPPORTED_DIR_IMPORT]: Directory import '████████████████████/src/devtools/packages/ui/theme' is not supported resolving ES modules imported from ████████████████████/src/devtools/packages/ui/uno.config.ts
@vue/devtools-ui:build:     at finalizeResolution (node:internal/modules/esm/resolver:263:11)
@vue/devtools-ui:build:     at moduleResolve (node:internal/modules/esm/resolver:860:10)
@vue/devtools-ui:build:     at defaultResolve (node:internal/modules/esm/resolver:984:11)
@vue/devtools-ui:build:     at ModuleLoader.defaultResolve (node:internal/modules/esm/loader:780:12)
@vue/devtools-ui:build:     at #cachedDefaultResolve (node:internal/modules/esm/loader:704:25)
@vue/devtools-ui:build:     at ModuleLoader.resolve (node:internal/modules/esm/loader:687:38)
@vue/devtools-ui:build:     at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:305:38)
@vue/devtools-ui:build:     at ModuleJob._link (node:internal/modules/esm/module_job:137:49)
@vue/devtools-ui:build: ELIFECYCLE Command failed with exit code 1.
@vue/devtools-ui:build: ERROR command finished with error: command (████████████████████/src/devtools/packages/ui) ████████████████████/src/devtools/node_modules/.bin/pnpm run build exited (1)
@vue/devtools-core:build: ELIFECYCLE Command failed with exit code 129.
@vue/devtools-api:build: ELIFECYCLE Command failed with exit code 129.
@vue/devtools-ui#build: command (████████████████████/src/devtools/packages/ui) ████████████████████/src/devtools/node_modules/.bin/pnpm run build exited (1)

Tasks:    2 successful, 5 total
Cached:   0 cached, 5 total
  Time:   4.838s
Failed:   @vue/devtools-ui#build

ERROR run failed: command  exited (1)
ELIFECYCLE Command failed with exit code 1.

Root Cause of the Error

• ES Modules require file extensions in import statements, but some locations were missing these extensions.
• Using .js extensions causes other errors, so .ts extensions were used instead.

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[skirtles-code]

A few observations:

• I believe this problem was introduced by the release of Node 24. This error doesn't occur with Node 22.22.1.
• The error is fixed on main. Testing with the latest Node LTS, 24.14.0, I can hit this error up until commit 58d8737. After that it builds successfully. That commit updates several dependencies. I'm not sure which one fixed the problem, but presumably one of the old dependencies wasn't fully compatible with Node 24.
• The error still occurs on the v7-patch branch.