Allow searching the text-index by gene name from the URL bar

[cmdcolin]

This adds the ability to search by gene name from the &loc= in the URL bar for launching a linear genome view.

This would not yet work for synteny view because the synteny view still uses just navToLocString which assumes a locstring

Examples

## no search box popup since EDEN is a unique feature
localhost:3000/?config=test_data/volvox/config.json&loc=EDEN&assembly=volvox

## pops up a selection box since there are multiple seg08 features
localhost:3000/?config=test_data/volvox/config.json&loc=seg08&assembly=volvox

note that this may be just a larger issue of search box behavior, but I believe that it might popup if e.g. there are two gene tracks (e.g. ensembl and ncbi) with the same gene name even if they have "the same location"...it's not that bad but it may be undesirable for the URL bar to popup the selection box too much, its better to just jump right into the genome view if possible

this PR is in response to a office hours issue

xref #3149

[cmdcolin]

one other 'behavior' that may result from this is the search index will auto-popup the track that was hit by the search index, even though it may not have been in the &tracks= list from the URL. hard to say whether that's the right behavior or not

[codecov]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (5f762ea) 63.19% compared to head (f4a750e) 63.20%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
...ar-genome-view/src/LaunchLinearGenomeView/index.ts	55.55%	4 Missing ⚠️
plugins/linear-genome-view/src/searchUtils.ts	91.66%	4 Missing ⚠️
...view/src/LinearGenomeView/components/SearchBox.tsx	80.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4068   +/-   ##
=======================================
  Coverage   63.19%   63.20%           
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  Files        1044     1045    +1     
  Lines       30551    30578   +27     
  Branches     7289     7294    +5     
=======================================
+ Hits        19307    19326   +19     
- Misses      11073    11081    +8     
  Partials      171      171           

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[cmdcolin]

I think this should be good to go. There could be e.g. options that are added perhaps to avoid popping up the multi-select (like an "I'm feeling lucky, just go to the first one" type thing) but i think this should help