Updates GUI code to apply the correct usage of `guiObject.getTextSize()`
and `guiObject.GetPreferedTextSize()`.
- `guiObject.getPreferedTextSize()` is now used when the goal is to compute the
bounding box of a text string to dynamically resize or layout a GUI
object accordingly. It simulates how the text would be rendered,
accounting for markup and layout rules.
- `guiObject.getTextSize()` remains in use when text is being measured
within a fixed-size GUI element (e.g., a button or label). It respects
internal constraints like buffer zone and maxWidth, and is typically
used to align other elements based on its visual appearance.
These changes ensure more accurate text sizing and consistent layout
behavior across GUI components.
- Left-clicking the portrait of a unit will make the camera follow that
unit (before: no action). A tooltip informs the player of this
possibility.
- Left-clicking the portrait of a structure will make the camera focus on
that structure (before: no action). A tooltip informs the player of
this possibility.
- Double-clicking a hero/treasure icon will make the camera follow that
hero/treasure (before: just focus on that hero/treasure).
- Some minor related changes.
Fixes#6879
