campaigns: fix icon display on navbars

Created by: LawnGnome

As reported by @bobheadxi, both the global and namespace navbars were using subtly (or not so subtly) incorrect versions of the campaigns icon. This metaphorically aligns them with the intended versions, and also adds the required viewbox tweaks to literally align them with the other icons in their respective navbars.

Created by: sourcegraph-bot

Notifying subscribers in CODENOTIFY files for diff 22f1692018c738089655b3e4cd48fc067ffc5dab...ad63a317200cfe6ac7b718927dd1555e4f5a2dd3.

Notify	File(s)
@eseliger	client/web/src/enterprise/campaigns/global/nav/CampaignsNavItem.tsx client/web/src/enterprise/campaigns/global/nav/snapshots/CampaignsNavItem.test.tsx.snap client/web/src/enterprise/campaigns/icons.tsx

Created by: codecov[bot]

Codecov Report

Merging #14967 into main will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main   #14967   +/-   ##
=======================================
  Coverage   52.12%   52.13%           
=======================================
  Files        1556     1556           
  Lines       79501    79503    +2     
  Branches     7146     7078   -68     
=======================================
+ Hits        41443    41445    +2     
  Misses      34312    34312           
  Partials     3746     3746           

Flag	Coverage Δ
#go	52.30% <ø> (ø)
#integration	30.34% <100.00%> (+<0.01%)
#storybook	22.18% <90.00%> (+0.01%)
#typescript	51.69% <100.00%> (+<0.01%)
#unit	33.91% <90.00%> (+<0.01%)

Impacted Files	Coverage Δ
...terprise/campaigns/global/nav/CampaignsNavItem.tsx	100.00% <ø> (ø)
client/web/src/enterprise/namespaces/navitems.ts	100.00% <ø> (ø)
client/web/src/enterprise/campaigns/icons.tsx	100.00% <100.00%> (ø)
client/web/src/settings/SettingsFile.tsx	70.65% <0.00%> (-1.09%)
...t/web/src/search/input/interactive/FilterInput.tsx	89.61% <0.00%> (+0.64%)

Created by: mrnugget

Thank you! I was about to merge this, but then I saw that @rrhyne and @AlicjaSuska are also tagged as reviewers. If one of you can look at percy and UI review and make sure this is good, then I/we can merge.