chore: remove unused copy-webpack-plugin from all subpackages

Agent-Logs-Url: https://github.com/microsoft/pyright/sessions/03266da5-c181-4ad4-a646-09f28e972a8e

Co-authored-by: rchiodo <19672699+rchiodo@users.noreply.github.com>

Author: Copilot

packages/pyright-internal/package-lock.json

@@ -45,7 +45,6 @@
         "@types/lodash": "^4.17.23",
         "@types/node": "^22.19.6",
         "@types/tmp": "^0.2.6",
-        "copy-webpack-plugin": "^14.0.0",
         "esbuild-loader": "^4.4.2",
         "jest": "^30.2.0",
         "jest-junit": "^16.0.0",

packages/pyright-internal/package.json

@@ -29,7 +29,6 @@
         "@rspack/cli": "^1.7.2",
         "@rspack/core": "^1.7.2",
         "@types/node": "^22.19.6",
-        "copy-webpack-plugin": "^14.0.0",
         "esbuild-loader": "^4.4.2",
         "shx": "^0.4.0",
         "ts-loader": "^9.5.4",

packages/pyright/package-lock.json

@@ -1593,7 +1593,6 @@
         "@types/node": "^22.19.6",
         "@types/vscode": "^1.101.0",
         "@vscode/vsce": "^2.32.0",
-        "copy-webpack-plugin": "^14.0.0",
         "esbuild-loader": "^4.4.2",
         "form-data": "^4.0.4",
         "shx": "^0.4.0",