'sourceFileMap' does not work if there are duplicate keys/values

We will incorrectly bind the breakpoint if there are duplicate editorPath keys since it will always pick up the first one if it is not unique.

Example launch.json:

"sourceFileMap": {
      "/project/Bcgir_task_build.latest_pass": { 
      "editorPath": "/project/test", 
      "useForBreakpoints": false
   },
      "/project/.Bcgir_task_build.latest_pass.sbsyncmaster": { 
      "editorPath": "/project/test", 
      "useForBreakpoints": false
   },
      "/project/.Bcgir_task_build.latest_pass.sbsyncmaster.inprogress": { 
      "editorPath": "/project/test", 
      "useForBreakpoints": false
   }
},

Example Setting Breakpoint:

<--   C (setBreakpoints-4): {"command":"setBreakpoints","arguments":{"source":{"name":"tGenAndKill.cpp","path":"/project/test/matlab/src/cgir_support/dom_core/analysis/livenessAnalysis/pkgtest/tGenAndKill.cpp"},"lines":[5],"breakpoints":[{"line":5}],"sourceModified":false},"type":"request","seq":4}
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (6613) <-1013-break-insert -f /project/Bcgir_task_build.latest_pass/matlab/src/cgir_support/dom_core/analysis/livenessAnalysis/pkgtest/tGenAndKill.cpp:5\n"},"seq":504}
1: (6613) <-1013-break-insert -f /project/Bcgir_task_build.latest_pass/matlab/src/cgir_support/dom_core/analysis/livenessAnalysis/pkgtest/tGenAndKill.cpp:5
--> E (output): {"type":"event","event":"output","body":{"category":"console","output":"1: (6649) ->&\"No source file named /project/Bcgir_task_build.latest_pass/matlab/src/cgir_support/dom_core/analysis/livenessAnalysis/pkgtest/tGenAndKill.cpp.\\n\"\n"},"seq":506}
1: (6649) ->&"No source file named /project/Bcgir_task_build.latest_pass/matlab/src/cgir_support/dom_core/analysis/livenessAnalysis/pkgtest/tGenAndKill.cpp.\n"

Related: https://github.com/microsoft/vscode-cpptools/issues/6381

Fix:
Validate that compileTimePath and sourcePath are unique.
https://github.com/microsoft/MIEngine/blob/728f403c563c2c50c46542e9b44271a7f8d5895b/src/MICore/LaunchOptions.cs#L372-L415

Start in src/MICore/LaunchOptions.cs around lines 372-415, where sourceFileMap entries are processed. Trace how compileTimePath and sourcePath are handled for duplicate values, then validate that both are unique and confirm the breakpoint mapping no longer selects an ambiguous entry.