Order of lib and lef loading should not matter

[hongted]

Describe the bug

In OpenRoad, loading libs after lef results in different behavior (i.e. errors) than loading lefs before libs. This should either be announced to the user with a warning/error or the code updated.

Expected Behavior

Order of lef before lib or lef after lib loading should not matter.

Environment

N/A

To Reproduce

Swap

OpenROAD/src/gpl/test/mbff_test.cpp

Lines 72 to 73 in fb6bde3

	readLiberty(getFilePath("openroad/src/gpl/test/library/test/test0.lib"));
	loadTechAndLib("test0",

and run test.

Relevant log output

Screenshots

No response

Additional Context

No response