[ui] Fixes an issue where shift+num would not open an eval on the evaluations index table

[philrenaud]

Because we have multiple links on the Evaluations page table (to open the eval in a sidebar, and also to open the job to which the eval is related), we used a keyboard event "keyup" binding to let a user do something like tab + enter or tab + space to open the sidebar.

This predated the general keyboard navigation convention in the Nomad UI of shift+01, shift+02 to open a list row item action. The "which key was pressed" guard on opening the sidebar prevents this sidebar from opening with shift+n, and this PR fixes that by passing in an explicit "keynav" string on command.

[pkazmierczak]

LGTM!

[github-actions]

Ember Test Audit comparison

	main	166d27f	change
passes	1549	1549	0
failures	0	0	0
flaky	0	0	0
duration	10m 48s 225ms	10m 44s 165ms	-04s 060ms

[github-actions]

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