fix(annotations): coverage floors for the Tag dialog round

Floors for the new images-favorites.mjs and images-tagging.mjs, and the
measured raises of image-tagging-state.mjs and image-tagging.mjs.
activity-scan.mjs keeps main's floors.

tools/vendor/frontend-coverage-baseline.json

@@ -162,10 +162,10 @@
     "statements": 97
   },
   "workspace/activity-scan.mjs": {
-    "lines": 96,
-    "branches": 73,
+    "lines": 95,
+    "branches": 64,
     "functions": 98,
-    "statements": 96
+    "statements": 95
   },
   "workspace/activity-store.mjs": {
     "lines": 98,
@@ -223,14 +223,14 @@
   },
   "workspace/image-tagging-state.mjs": {
     "lines": 98,
-    "branches": 93,
+    "branches": 94,
     "functions": 98,
     "statements": 98
   },
   "workspace/image-tagging.mjs": {
     "lines": 97,
     "branches": 88,
-    "functions": 86,
+    "functions": 87,
     "statements": 97
   },
   "workspace/images-category.mjs": {
@@ -245,6 +245,12 @@
     "functions": 98,
     "statements": 98
   },
+  "workspace/images-favorites.mjs": {
+    "lines": 98,
+    "branches": 94,
+    "functions": 85,
+    "statements": 98
+  },
   "workspace/images-selection.mjs": {
     "lines": 98,
     "branches": 92,
@@ -257,6 +263,12 @@
     "functions": 98,
     "statements": 98
   },
+  "workspace/images-tagging.mjs": {
+    "lines": 98,
+    "branches": 98,
+    "functions": 98,
+    "statements": 98
+  },
   "workspace/images.mjs": {
     "lines": 97,
     "branches": 89,