[PowerRename] Fix tests inconsistency, improve test performance (#8129)

* Move retrieveing file attibutes to PowerRenameRegex
Move file attributes unit tests to PowerRenameRegexTests
Add file time field to MockPowerRenameItem

* Add file attributes unittests to PowerRenameManagerTests

* Change variable name

* Rearrange function arguments

* Check if file attributes are used only once

* Change variable name LocalTime -> fileTime, date -> time

* Set fileTime as a member of PowerRenameRegEx rather than passing as an argument

* Change function name isFileAttributesUsed() -> isFileTimeUsed()
Check before resetting fileTime

* Fix small bugs

* Fix typos

* Refactor for readability, move free calls to reachable places

* Fix search for area empty bug
searchTerm being empty is not an invalid argument rather it must return OK without any operation
Tests must check if Replace()  returns S_OK becuase later it checks its result

* Check return values of method calls in PowerRenameManager
Remove received argments checks from some methods because argument being null or empty string doesnt mean it is invalid or method fails

* Fix formatting. Remove overlooked comment. Fix error message.

* Change HRESULT declarations according to coding style

* Fix unhandled case. Refactor.

.github/actions/spell-check/expect.txt

@@ -2126,6 +2126,7 @@ tif
 TILEDWINDOW
 timeinfo
 Timeline
+timeunion
 timeutil
 titlecase
 tlb
@@ -2191,6 +2192,7 @@ uint
 UIPI
 UIs
 ul
+ULARGE
 ULLONG
 ulong
 unchecks