Capture fakes.version instead of the current version string in baselines (microsoft#36518)

* Capture CURRENT.VERSION instead of the current version string in baselines

* Use fakes.version

* Move replacer into patchHostForBuildInfoReadWrite

Author: weswigham

src/harness/fakesHosts.ts

@@ -534,6 +534,8 @@ ${indentText}${text}`;
             buildInfo.version = ts.version;
             return ts.getBuildInfoText(buildInfo);
         };
+        const originalWrite = sys.write;
+        sys.write = msg => originalWrite.call(sys, msg.replace(ts.version, version));
 
         if (sys.writeFile) {
             const originalWriteFile = sys.writeFile;

tests/baselines/reference/tsc/runWithoutArgs/initial-build/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js

@@ -1,6 +1,6 @@
 //// [/lib/initial-buildOutput.txt]
 /lib/tsc 
-Version 3.8.0-dev
+Version FakeTSVersion
 Syntax:   tsc [options] [file...]
 
 Examples: tsc hello.ts