chore: remove common styles folder before running SASS build

- this will hopefully fix the flaky SASS build issue: sass:bundle: Error reading dist/styles/css: file already exists.

Author: ghiscoding

packages/common/package.json

@@ -36,7 +36,7 @@
     "build:incremental": "tsc --incremental --declaration",
     "clean": "remove dist tsconfig.tsbuildinfo",
     "dev": "node build-watch.mjs",
-    "sass:bundle": "pnpm run sass:build && pnpm run sass:copy",
+    "sass:bundle": "remove dist/styles && pnpm run sass:build && pnpm run sass:copy",
     "sass-build-task:scss-compile:default": "sass src/styles/slickgrid-theme-default.scss dist/styles/css/slickgrid-theme-default.css --style=compressed --quiet-deps --no-source-map --load-path=node_modules",
     "sass-build-task:scss-compile:default-lite": "sass src/styles/slickgrid-theme-default.lite.scss dist/styles/css/slickgrid-theme-default.lite.css --style=compressed --quiet-deps --no-source-map --load-path=node_modules",
     "sass-build-task:scss-compile:bootstrap": "sass src/styles/slickgrid-theme-bootstrap.scss dist/styles/css/slickgrid-theme-bootstrap.css --style=compressed --quiet-deps --no-source-map --load-path=node_modules",