xla

41295635 - [Functionalization] Fix more cpp tests that require new lowerings (#4496)

[Functionalization] Fix more cpp tests that require new lowerings (#4496) * Lower _linalg_slogdet and and linalg_inv_ex Lowering some linalg ops in attempt to fix cpp tests that dispatch existing ops into these after enabling functionalization. * Add some more comments * Run linter and rebase with functionalization branch * Remove duplpicate definition for _linalg_svd * Fix xla svd counter for cpp test * Update linalg_inv_ex to fall when back is set to true