Export and drop triggers in a single POST request

[IAndreyI]

Description

This PR makes "Export" and "Drop" multiple triggers more quick. These actions perform in a single post request.

Fixes #18556

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[codecov]

Codecov Report

Attention: Patch coverage is 98.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 58.86%. Comparing base (3acf78d) to head (7b441ac).
Report is 281 commits behind head on master.

Files	Patch %	Lines
src/Controllers/Triggers/IndexController.php	97.36%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #18999      +/-   ##
============================================
+ Coverage     58.83%   58.86%   +0.03%     
- Complexity    15929    15941      +12     
============================================
  Files           667      667              
  Lines         61329    61374      +45     
============================================
+ Hits          36081    36127      +46     
+ Misses        25248    25247       -1     

Flag	Coverage Δ
dbase-extension	58.86% <98.00%> (+0.03%)	⬆️
unit-8.1-ubuntu-latest	58.82% <98.00%> (+0.03%)	⬆️
unit-8.2-ubuntu-latest	58.79% <98.00%> (+0.03%)	⬆️
unit-8.3-ubuntu-latest	58.79% <98.00%> (+0.03%)	⬆️
unit-8.4-ubuntu-latest	58.79% <98.00%> (+0.03%)	⬆️

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[williamdes]

Can you rebase this and fix this crash PHP Fatal error: A function with return type must return a value (did you mean "return null;" instead of "return;"?) in src/Controllers/Triggers/IndexController.php