[tests] fix paths in output

tests/misc/projects/Issue9676/compile1D.hxml.stderr

@@ -1 +1 @@
-[{"file":"C:\\git\\haxe\\tests\\misc\\projects\\Issue9676\\MainField.hx","diagnostics":[{"kind":4,"severity":1,"range":{"start":{"line":1,"character":8},"end":{"line":1,"character":17}},"args":"`final var` is not supported, use `final` instead"}]}]
+[{"file":"$$normPath(::cwd::/,true)MainField.hx","diagnostics":[{"kind":4,"severity":1,"range":{"start":{"line":1,"character":8},"end":{"line":1,"character":17}},"args":"`final var` is not supported, use `final` instead"}]}]

tests/misc/projects/Issue9676/compile2D.hxml.stderr

@@ -1 +1 @@
-[{"file":"C:\\git\\haxe\\tests\\misc\\projects\\Issue9676\\MainExpr.hx","diagnostics":[{"kind":4,"severity":1,"range":{"start":{"line":1,"character":1},"end":{"line":1,"character":10}},"args":"`final var` is not supported, use `final` instead"}]}]
+[{"file":"$$normPath(::cwd::/,true)MainExpr.hx","diagnostics":[{"kind":4,"severity":1,"range":{"start":{"line":1,"character":1},"end":{"line":1,"character":10}},"args":"`final var` is not supported, use `final` instead"}]}]

tests/misc/projects/Issue9676/compile3D.hxml.stderr

@@ -1 +1 @@
-[{"file":"C:\\git\\haxe\\tests\\misc\\projects\\Issue9676\\MainMacro.hx","diagnostics":[{"kind":4,"severity":1,"range":{"start":{"line":1,"character":7},"end":{"line":1,"character":16}},"args":"`final var` is not supported, use `final` instead"}]}]
+[{"file":"$$normPath(::cwd::/,true)MainMacro.hx","diagnostics":[{"kind":4,"severity":1,"range":{"start":{"line":1,"character":7},"end":{"line":1,"character":16}},"args":"`final var` is not supported, use `final` instead"}]}]