fix(rcl): commit theme.js so RCL interop JS ships via MapStaticAssets

theme/ was missing from the per-module .gitignore allowlist (only
parallax/ and knob/ were re-included), so theme.js never got committed,
was absent from publish output, and 404'd at runtime. Broaden the
allowlist to the whole DeepDrftShared.Client/wwwroot/js/ tree so every
compiled RCL interop module ships automatically.

DeepDrftShared.Client/wwwroot/js/theme/theme.js

@@ -0,0 +1,15 @@
+/**
+ * theme - body-class helpers for dark-mode theme toggling.
+ *
+ * Single Responsibility: apply or remove the deepdrft-theme-dark class on
+ * document.body so that portaled MudBlazor elements (popovers, menus, selects)
+ * inherit --deepdrft-popover-surface from body.deepdrft-theme-dark rather than
+ * from :root only.  Popovers portal outside the ThemeWrapperClass div, so only
+ * a body-level class can reach them.
+ */
+/** Toggle the deepdrft-theme-dark class on document.body.
+ *  @param isDark  true to add the class, false to remove it. */
+export function setBodyThemeClass(isDark) {
+    document.body.classList.toggle('deepdrft-theme-dark', isDark);
+}
+//# sourceMappingURL=/js/theme/theme.js.map

DeepDrftShared.Client/wwwroot/js/theme/theme.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"theme.js","sourceRoot":"/Interop/","sources":["theme/theme.ts"],"names":[],"mappings":"AAAA;;;;;;;;GAQG;AAEH;gEACgE;AAChE,MAAM,UAAU,iBAAiB,CAAC,MAAe;IAC7C,QAAQ,CAAC,IAAI,CAAC,SAAS,CAAC,MAAM,CAAC,qBAAqB,EAAE,MAAM,CAAC,CAAC;AAClE,CAAC"}