Use Throwable as type hint in the exception callback

[DeepDiver1975]

Description

Not only exceptions can be thrown at runtime but also Errors. The common interface is \Throwable

Motivation and Context

Handle Errors properly as well

How Has This Been Tested?

• add a wrong type declaration in the code which is executed on the webdav endpoint
• see the error page properly popping up

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

Open tasks:

• Backport (if applicable set "backport-request" label and remove when the backport was done)

[patrickjahns]

LGTM

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@27d12b0). Click here to learn what that means.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master   #35713   +/-   ##
=========================================
  Coverage          ?   65.77%           
  Complexity        ?    18777           
=========================================
  Files             ?     1222           
  Lines             ?    70872           
  Branches          ?     1289           
=========================================
  Hits              ?    46617           
  Misses            ?    23877           
  Partials          ?      378

Flag	Coverage Δ	Complexity Δ
#javascript	53.7% <ø> (?)	0 <ø> (?)
#phpunit	67.15% <100%> (?)	18777 <4> (?)

Impacted Files	Coverage Δ	Complexity Δ
apps/dav/lib/Files/BrowserErrorPagePlugin.php	90% <100%> (ø)	5 <2> (?)
apps/dav/lib/Connector/Sabre/FilesPlugin.php	87.07% <100%> (ø)	77 <2> (?)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 27d12b0...32b9ac6. Read the comment docs.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@27d12b0). Click here to learn what that means.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master   #35713   +/-   ##
=========================================
  Coverage          ?   65.77%           
  Complexity        ?    18777           
=========================================
  Files             ?     1222           
  Lines             ?    70872           
  Branches          ?     1289           
=========================================
  Hits              ?    46617           
  Misses            ?    23877           
  Partials          ?      378

Flag	Coverage Δ	Complexity Δ
#javascript	53.7% <ø> (?)	0 <ø> (?)
#phpunit	67.15% <100%> (?)	18777 <4> (?)

Impacted Files	Coverage Δ	Complexity Δ
apps/dav/lib/Files/BrowserErrorPagePlugin.php	90% <100%> (ø)	5 <2> (?)
apps/dav/lib/Connector/Sabre/FilesPlugin.php	87.07% <100%> (ø)	77 <2> (?)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 27d12b0...039230d. Read the comment docs.

[DeepDiver1975]

@patrickjahns addressed - THX

[patrickjahns]

LGTM 👍

[DeepDiver1975]

backport #35748