fix: wrap reset and resetRoot inside transaction

[osdnk]

closes https://github.com/react-navigation/navigation-ex/issues/185

[codecov-io]

Codecov Report

Merging #189 into master will decrease coverage by 0.17%.
The diff coverage is 86.36%.

@@            Coverage Diff             @@
##           master     #189      +/-   ##
==========================================
- Coverage   93.35%   93.18%   -0.18%     
==========================================
  Files          36       36              
  Lines         768      763       -5     
  Branches      194      201       +7     
==========================================
- Hits          717      711       -6     
- Misses         42       43       +1     
  Partials        9        9

Impacted Files	Coverage Δ
packages/core/src/NavigationContainer.tsx	88.46% <86.36%> (-1.02%)	⬇️
packages/core/src/useOnAction.tsx	96.77% <0%> (-0.29%)	⬇️
packages/routers/src/StackRouter.tsx	96.96% <0%> (-0.09%)	⬇️
packages/routers/src/DrawerRouter.tsx	87.5% <0%> (ø)	⬆️
packages/core/src/useNavigationBuilder.tsx	98.76% <0%> (ø)	⬆️
packages/core/src/useNavigationHelpers.tsx	100% <0%> (ø)	⬆️

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