[ShyyYuki]

What

Ctrl+left-clicking a message in the search results now clears the search
and scrolls the full chat to that message, so you can read the surrounding
context.

Also fixes broken strings in pt_pt.json.

How

• ChatScreenMixin#mouseClickedEvents: new branch for Ctrl+left-click while
  search results are present.
• findSearchResultAt: finds the searched message under the mouse, using the
  same lookup as the ContextMenu constructor.
• jumpToMessage: clears the search field, maps the message to its visible
  line with ChatUtil.message2Visible, and sets chatScrollbarPos so the
  message sits roughly in the middle of the chat window (clamped to the valid
  range).
• pt_pt.json: fixed the strings that were broken.

Ctrl is required so normal clicks on clickable chat text are unaffected.

Notes

• Tested and works