enhance: Rectify run_clang_format grep command

[congqixia]

Previously the grep with regex does not work and failed to match lots of .cpp files

This PR:

• use "-E" flag to use regex match
• commit the fixed result of current cpp code

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia

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• internal/core/OWNERS [congqixia]

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[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 80.98%. Comparing base (7476eb3) to head (12b1191).
Report is 9 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/core/src/query/SearchBruteForce.cpp	0.00%	1 Missing ⚠️
internal/core/src/segcore/Utils.cpp	0.00%	1 Missing ⚠️
internal/core/src/storage/Util.cpp	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #39534       +/-   ##
===========================================
+ Coverage   69.56%   80.98%   +11.41%     
===========================================
  Files         300     1407     +1107     
  Lines       26986   198816   +171830     
===========================================
+ Hits        18773   161007   +142234     
- Misses       8213    32110    +23897     
- Partials        0     5699     +5699     

Components	Coverage Δ
Client	79.50% <ø> (∅)
Core	69.56% <25.00%> (ø)
Go	82.90% <ø> (∅)

Files with missing lines	Coverage Δ
internal/core/src/segcore/ConcurrentVector.h	95.97% <ø> (ø)
internal/core/src/query/SearchBruteForce.cpp	79.60% <0.00%> (ø)
internal/core/src/segcore/Utils.cpp	71.85% <0.00%> (ø)
internal/core/src/storage/Util.cpp	75.14% <50.00%> (ø)

... and 1107 files with indirect coverage changes

[tedxu]

/lgtm