makefile: update build cmd in graceshutdown & globalkilltest makefile (#47704)

[ti-chi-bot]

This is an automated cherry-pick of #47704

What problem does this PR solve?

Issue Number: close #47705

Problem Summary:
Relate to #47123, we need to update build cmds to modify tidb-server src path.

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[pingyu]

LGTM~

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: 3pointer, pingyu

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-10-18 03:04:38.418180346 +0000 UTC m=+1799076.005290491: ☑️ agreed by pingyu.
• 2023-10-18 06:01:36.490589966 +0000 UTC m=+1809694.077700096: ☑️ agreed by 3pointer.