Search backend: Append "Job" to job names in `searcher` package
Created by: tbliu98
Related to #34009 (closed)
Because searcher.Searcher
and searcher.SymbolSearcher
implement job.Job
, renaming them to searcher.SearcherJob
and searcher.SymbolSearcherJob
, respectively, for clarity when reading the code and looking at traces.
Test plan
Semantics-preserving; updated autogold tests.