Do not fail to activate extension when watcher installation fails

[dgolovin]

This PR fixes #2184.

Signed-off-by: Denis Golovin dgolovin@redhat.com

[codecov]

Codecov Report

Merging #2185 (bda799b) into master (c1baa42) will decrease coverage by 0.01%.
The diff coverage is 60.00%.

❗ Current head bda799b differs from pull request most recent head f93fd1e. Consider uploading reports for the commit f93fd1e to get more accurate results

@@            Coverage Diff             @@
##           master    #2185      +/-   ##
==========================================
- Coverage   76.50%   76.48%   -0.02%     
==========================================
  Files          48       48              
  Lines        3294     3296       +2     
  Branches      628      630       +2     
==========================================
+ Hits         2520     2521       +1     
- Misses        774      775       +1     

Impacted Files	Coverage Δ
src/explorer.ts	80.32% <60.00%> (-1.03%)	⬇️

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