Add static class names to UI elements for easier customization (#4421)

* Initial plan

* Add static class names to UI elements for easier customization

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

* Add unique DOM element IDs for easier customization targeting

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

* Remove duplicate class names, keep only IDs for UI element targeting

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

* Revert chat input field ID to original value

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

* Remove unnecessary nested spans and revert Button ID to original value

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

* Standardize ID names to follow owncast-{element-description}-{type} pattern

Co-authored-by: gabek <414923+gabek@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: gabek <414923+gabek@users.noreply.github.com>
Co-authored-by: Gabe Kangas <gabek@real-ity.com>

web/components/chat/ChatActionMessage/ChatActionMessage.tsx

@@ -9,6 +9,10 @@ export type ChatActionMessageProps = {
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 export const ChatActionMessage: FC<ChatActionMessageProps> = ({ body }) => (
   <div className={styles.chatActionPadding}>
-    <div dangerouslySetInnerHTML={{ __html: body }} className={styles.chatAction} />
+    <div
+      id="owncast-chat-action-message-text"
+      dangerouslySetInnerHTML={{ __html: body }}
+      className={styles.chatAction}
+    />
   </div>
 );