PMM-14031 Prepend subpath on home_page path

[matejkubinec]

PMM-14031

Link to the Feature Build: SUBMODULES-3964

Related PRs:

• PMM-14031 Add in missing subpaths to navtree grafana#827

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 44.14%. Comparing base (6be8951) to head (3b83eca).
⚠️ Report is 291 commits behind head on v3.

Additional details and impacted files

@@           Coverage Diff           @@
##               v3    #4112   +/-   ##
=======================================
  Coverage   44.14%   44.14%           
=======================================
  Files         369      369           
  Lines       45326    45326           
=======================================
+ Hits        20008    20010    +2     
+ Misses      23633    23629    -4     
- Partials     1685     1687    +2     

Flag	Coverage Δ
admin	17.27% <ø> (+0.04%)	⬆️
agent	52.60% <ø> (ø)
managed	44.99% <ø> (ø)
vmproxy	73.45% <ø> (ø)

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[CLAassistant]

All committers have signed the CLA.