Description:
After a crash and restart of LO when several files are available to be recovered, we can't be selective about recovery and can't shift-select everything.

Steps to Reproduce:
1. Start LibreOffice Writer.

2. Tools menu > Options > Load/Save > General > Save > Save AutoRecovery Information Every . . . Minutes has to be on and set for an interval suitable for this purpose.

3. File > New > Text Document and create some content.

4. Repeat step 2. When I discovered this problem, I had made 4 docs.

5. Wait past the interval set for AutoRecovery in STR 2. I don't think LO signals you that the interval has passed, so just don't do the next step too soon.

6. Power off without saving, quitting, logging off, restarting, or shutting down. In my case, I hadn't paid attention to the battery running down.

7. Power up (I plugged into AC power and pressed the power button). Do the normal start process.

8. Start LibreOffice. It will present you with an option to try to recover all the pre-crash files you made (Untitled 1, Untitled 2, etc.).

9. Notice that in the list of files only the first one is selected. Try to shift-select all of them. You can’t, so click the Start button. Don't click the Discard button.

Actual Results:
All will be recovered (and thus you can click the Finish button). By implication, therefore, you could not have opted to recover only some files and discarded others.

Expected Results:
Ability to select which files to recover or, if that's not feasible, the auto-selecting of all of the files in the list.

Selecting with discarding of anything not selected would conflict with users' expectations if they've recovered multiple files in the past without shift-selecting, and we wouldn't know which users those are. Therefore, unless all files were selected, ask the user to confirm the discarding of unselected files.


Reproducible: Always


User Profile Reset: No



Additional Info:
I haven't tested other modules (Calc, Base, etc.), but I imagine they're similar.

Platform: Ubuntu 20.04.2 LTS, kept evergreen.

LO:
Version: 6.4.7.2
Build ID: 1:6.4.7-0ubuntu0.20.04.1
CPU threads: 2; OS: Linux 5.8; UI render: default; VCL: gtk3; 
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded

The UserProfile should be irrelevant.

I don't think I have OpenGL.

See bug 112970.