Drop lodash from @pi/ui

The three functions it used (isEqual, some with an object as criterion
and capitalize) live in util/common/compare.ts with the same behaviour,
so apps no longer pull a CommonJS library that Node's ESM loader cannot
resolve by path. TaskStream's initial bundle goes down to 1.88 MB.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/ui/package.json

@@ -21,7 +21,6 @@
     "chart.js": "^4.0.0"
   },
   "dependencies": {
-    "lodash": "^4.17.0",
     "luxon": "^3.0.0",
     "ngx-infinite-scroll": "^22.0.0"
   },