"Auto hide toolbar" interrupts toolbar-based arrow key movement

[axiopaladin]

Describe the bug
The "Auto hide toolbar" setting is too aggressive in hiding the toolbar. Simply moving the cursor will cause the suggestions to replace the toolbar, which is a problem if you wanted to continue moving the cursor by using the toolbar.

To Reproduce
First, enable the following settings:

• Toolbar -> Select toolbar keys -> "< left"
• Toolbar -> Auto hide toolbar

Now, try typing something, and then open the toolbar and tap "< left" to move the cursor back into what you typed. The "Auto hide toolbar" will cause the suggestions to replace the toolbar.

Expected behavior
Toolbar should not auto-hide when simply moving the cursor around. The current behavior makes it very tedious if you want to repeatedly press one of the arrow keys, such as to move the cursor to a specific place in the middle of an input.

(The auto-hide behavior seems to be triggered by an update in word suggestions. Honestly, word suggestions should probably only update when moving to a new word, not to a new character in the same word. But if this is the biggest problem that causes, I'd imagine that changing the suggestion engine trigger system might be a little too much to ask for.)

The smallest and simplest fix to this specific issue would probably be to disable updating predictions entirely whenever the previous action performed was purely cursor movement.

App version
Latest from f-Droid at time of writing (Version 2.3)

Device:

• Model: Samsung S20
• OS: Android 13 (stock Samsung UI, version 5.1)

[Uranusek]

Duplicate of #906