DEV: Update ember-cli-htmlbars to 6.2.0 (#20467)

* Build(deps): Bump ember-cli-htmlbars in /app/assets/javascripts

Bumps [ember-cli-htmlbars](https://github.com/ember-cli/ember-cli-htmlbars) from 6.1.1 to 6.2.0.
- [Release notes](https://github.com/ember-cli/ember-cli-htmlbars/releases)
- [Changelog](https://github.com/ember-cli/ember-cli-htmlbars/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ember-cli/ember-cli-htmlbars/compare/v6.1.1...v6.2.0)

---
updated-dependencies:
- dependency-name: ember-cli-htmlbars
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Load additional files

* Update code

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

app/assets/javascripts/discourse-js-processor.js

@@ -2,7 +2,7 @@
 
 // This is executed in mini_racer to provide the JS logic for lib/discourse_js_processor.rb
 
-const makeEmberTemplateCompilerPlugin =
+const HTMLBarsInlinePrecompile =
   require("babel-plugin-ember-template-compilation").default;
 const colocatedBabelPlugin = require("colocated-babel-plugin").default;
 const precompile = require("ember-template-compiler").precompile;
@@ -38,9 +38,10 @@ function buildEmberTemplateManipulatorPlugin(themeId) {
 }
 
 function buildTemplateCompilerBabelPlugins({ themeId }) {
-  let compileFunction = precompile;
+  const compiler = { precompile };
+
   if (themeId) {
-    compileFunction = (src, opts) => {
+    compiler.precompile = (src, opts) => {
       return precompile(src, {
         ...opts,
         plugins: {
@@ -54,8 +55,11 @@ function buildTemplateCompilerBabelPlugins({ themeId }) {
     colocatedBabelPlugin,
     require("widget-hbs-compiler").WidgetHbsCompiler,
     [
-      makeEmberTemplateCompilerPlugin(() => compileFunction),
-      { enableLegacyModules: ["ember-cli-htmlbars"] },
+      HTMLBarsInlinePrecompile,
+      {
+        compiler,
+        enableLegacyModules: ["ember-cli-htmlbars"],
+      },
     ],
   ];
 }