DH Key compute check modification for OOB Pairing

[Gopi-SB]

Code change

• for DH Key compute , ra and rb values are based on shared OOB randomizer value
• oob_data_flag should be 1 if remote device oob data present
  
• initial shared OOB randomizer value should not modified
  Please review the changes

[barbibulle]

@Gopi-SB You'll need to fix the linter/formatter errors before we can merge this. In general, the best way to avoid these errors is to run invoke project.pre-commit before submitting/updating a PR, this will catch those errors locally.

[Gopi-SB]

@barbibulle if the PR is good . Can you please merge to main

[zxzxwu]

@barbibulle 如果公關好的話。你能合併到main嗎

Please fix the test failures.

[Gopi-SB]

@zxzxwu test failure are fixed