Skip invalid instructions and Detect last frame in backtrace

[alirezamoshtaghi]

Description

Some times compiler generates dead code segments with invalid instructions. Our decompiler fails to recognize these segments and often fails to detect crash start. this pull request teaches the disassembler to skip these code segments and generate a note on the screen to notify user that there are invalid instructions.

Also, this PR fixes a bug in backtrace generation where the last frame is not detected.

Type of Change

• [X] Bug Fix
• [ ] New Feature
• [ ] Breaking Change
• [ ] Refactor
• [ ] Documentation
• [ ] Other (please describe)

Checklist

• [ ] I have read the contributing guidelines
• [ ] Existing issues have been referenced (where applicable)
• [ ] I have verified this change is not present in other open pull requests
• [ ] Functionality is documented
• [ ] All code style checks pass
• [ ] New code contribution is covered by automated tests
• [ ] All new and existing tests pass