DEV: Convert various components to gjs (#26782)

Those were all low hanging fruits - all were already glimmer components, so this was mostly merging js and hbs files and adding imports.

(occasionally also adds/fixes class names)

app/assets/javascripts/admin/addon/components/plugin-commit-hash.gjs

@@ -0,0 +1,19 @@
+import Component from "@glimmer/component";
+
+export default class PluginCommitHash extends Component {
+  get shortCommitHash() {
+    return this.args.plugin.commitHash?.slice(0, 7);
+  }
+
+  <template>
+    {{#if @plugin.commitHash}}
+      <a
+        href={{@plugin.commitUrl}}
+        target="_blank"
+        rel="noopener noreferrer"
+        class="current commit-hash"
+        title={{@plugin.commitHash}}
+      >{{this.shortCommitHash}}</a>
+    {{/if}}
+  </template>
+}

app/assets/javascripts/admin/addon/components/plugin-commit-hash.hbs

@@ -1,9 +0,0 @@
-{{#if this.commitHash}}
-  <a
-    href={{@plugin.commitUrl}}
-    target="_blank"
-    rel="noopener noreferrer"
-    class="current commit-hash"
-    title={{this.commitHash}}
-  >{{this.shortCommitHash}}</a>
-{{/if}}

app/assets/javascripts/admin/addon/components/plugin-commit-hash.js

@@ -1,11 +0,0 @@
-import Component from "@glimmer/component";
-
-export default class PluginCommitHash extends Component {
-  get shortCommitHash() {
-    return this.commitHash?.slice(0, 7);
-  }
-
-  get commitHash() {
-    return this.args.plugin.commitHash;
-  }
-}