Add prerelease build process

Squashed commit of the following:

commit d09ea7c
Author: scripthunter7 <d.tota@adguard.com>
Date:   Fri Nov 28 18:49:25 2025 +0100

    Update build process to use prerelease configuration
    
    - Add build:prerelease and build:vsix-prerelease scripts to package.json
    - Update bamboo-specs/build-prerelease.yaml to use build:prerelease instead of build:prod
    - Update @vscode/vsce dependency from ^2.22.0 to ^3.7.1
    - Add --pre-release flag to vsce package command for prerelease builds

Author: totadavid95

bamboo-specs/build-prerelease.yaml

@@ -55,8 +55,8 @@ Build:
             # Run Jest tests
             pnpm test
 
-            # Create production build
-            pnpm build:prod
+            # Create prerelease build
+            pnpm build:prerelease
 
             # Create build.txt file with version
             pnpm build:txt

package.json

@@ -94,8 +94,10 @@
     "scripts": {
         "build:grammar": "tsx tools/grammar-builder.ts",
         "build:prod": "pnpm build:clean && pnpm build:grammar && pnpm test:compile && pnpm esbuild:client --minify && pnpm esbuild:agtree --minify && pnpm esbuild:ecss-tree --minify && pnpm esbuild:aglint --minify && pnpm esbuild:server --minify && pnpm build:vsix",
+        "build:prerelease": "pnpm build:clean && pnpm build:grammar && pnpm test:compile && pnpm esbuild:client --minify && pnpm esbuild:server --minify && pnpm build:vsix-prerelease",
         "build:txt": "tsx tools/build-txt.ts",
         "build:vsix": "mkdirp out && vsce package --out out/vscode-adblock.vsix",
+        "build:vsix-prerelease": "mkdirp out && vsce package --out out/vscode-adblock.vsix --pre-release",
         "build:clean": "rimraf ./client/out && rimraf ./server/out && rimraf ./syntaxes/out && rimraf ./out",
         "clean": "tsx tools/clean.ts",
         "esbuild:aglint": "esbuild ./server/src/aglint.ts --bundle --outfile=server/out/aglint.js --format=cjs --platform=node --alias:@adguard/agtree=./agtree --external:./agtree --alias:@adguard/ecss-tree=./ecss-tree --external:./ecss-tree",
@@ -128,7 +130,7 @@
         "@types/plist": "^3.0.2",
         "@typescript-eslint/eslint-plugin": "^6.3.0",
         "@typescript-eslint/parser": "^6.3.0",
-        "@vscode/vsce": "^2.22.0",
+        "@vscode/vsce": "^3.7.1",
         "chokidar-cli": "^3.0.0",
         "commander": "^11.1.0",
         "concurrently": "^8.0.1",