(fix) WOverview: render progress of analysis triggered by WTrackMenu/AnalysisFeature

[ronso0]

Currently, the analysis progress is rendered in the overview widgets only for analysis triggered when loading a track.
Now it's also rendered when the loaded track is re-analyzed (after clearing the wavefom).

1. load a new track to a deck (or take an analyzed track all clear waveform, BPM, ReplayGain ..)
   = analysis starts, in overview the analysis progress bar is drawn and waveform is rendered as data is being created
2. track menu -> Clear -> Waveform
3. re-analyze (via deck track menu, library track menu or find track in Analyze feature)
   = no progress bar in overview, no feedback <-- fixed, same feedback as with 1.

by-catch of #14140