Breakpoints are not being installed

[award999]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Set a source breakpoint in a Swift source file
2. Debug a test or Swift binary
3. Notice how the breakpoint gets hit, but the red breakpoint dot disappears because it is not marked as installed

Expected behavior
Always mark the breakpoint as installed

Environment

• OS: All
• Swift version (output of swift --version): All Swift 6.0+

Additional context

• Always happens for Swift executable binary
• Always happens we debugging a swift-testing test

• Doesn't seem to happen for XCTest