activity bump text is hard-coded at 1 hour

[stirby]

The text in Workspace settings -> Schedule -> Autostop displays that the workspace will be automatically bumped by 1 hour when activity is detected.

This is now configurable, and should reflect the ActivityBump setting like the template settings schedule page does.

From workspace settings:

Location:

coder/site/src/pages/WorkspaceSettingsPage/WorkspaceSchedulePage/WorkspaceScheduleForm.tsx

Lines 397 to 400 in 53c5543

	Set how many hours should elapse after the workspace started
	before the workspace automatically shuts down. This will be
	extended by 1 hour after last activity in the workspace was
	detected.