fix: enable no-deprecated-classes tailwind lint rule (#9417)

## Summary

Enable `better-tailwindcss/no-deprecated-classes` lint rule and auto-fix
all 103 violations across 65 files. First PR in a stacked series for
#9300.

## Changes

- **What**: Replace deprecated Tailwind v3 classes with v4 equivalents:
  - `rounded` → `rounded-sm` (85)
  - `flex-shrink-0` → `shrink-0` (16)
  - `flex-grow` → `grow` (2)
- Enable `no-deprecated-classes` as `'error'` in eslint config
- Update one test asserting on `'rounded'` class string

## Review Focus

Mechanical auto-fix PR — all changes produced by `eslint --fix`. No
visual or behavioral changes (Tailwind v4 aliases these classes
identically).

Fixes #9300 (partial — 1 of 3 rules)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9417-fix-enable-no-deprecated-classes-tailwind-lint-rule-31a6d73d3650819eaef4cf8ad84fb186)
by [Unito](https://www.unito.io)

Co-authored-by: Alexander Brown <drjkl@comfy.org>

src/components/custom/widget/WorkflowTemplateSelectorDialog.vue

@@ -133,7 +133,7 @@
         <!-- Title -->
         <span
           v-if="isLoading"
-          class="inline-block h-8 w-48 animate-pulse rounded bg-dialog-surface"
+          class="inline-block h-8 w-48 animate-pulse rounded-sm bg-dialog-surface"
         ></span>
 
         <!-- Template Cards Grid -->
@@ -164,10 +164,10 @@
               <CardBottom>
                 <div class="px-4 py-3">
                   <div
-                    class="mb-2 h-6 animate-pulse rounded bg-dialog-surface"
+                    class="mb-2 h-6 animate-pulse rounded-sm bg-dialog-surface"
                   ></div>
                   <div
-                    class="h-4 animate-pulse rounded bg-dialog-surface"
+                    class="h-4 animate-pulse rounded-sm bg-dialog-surface"
                   ></div>
                 </div>
               </CardBottom>
@@ -349,10 +349,10 @@
               <CardBottom>
                 <div class="px-4 py-3">
                   <div
-                    class="mb-2 h-6 animate-pulse rounded bg-dialog-surface"
+                    class="mb-2 h-6 animate-pulse rounded-sm bg-dialog-surface"
                   ></div>
                   <div
-                    class="h-4 animate-pulse rounded bg-dialog-surface"
+                    class="h-4 animate-pulse rounded-sm bg-dialog-surface"
                   ></div>
                 </div>
               </CardBottom>