fix: Add the raw method to the react-native implementation

[rmevans9]

Issue: The new client for react-native did not export the raw method from clientApi as the storyshots addon was expecting

What I did

Added the raw method as an export from the react-native client

How to test

• Run the storyshots addon with the latest alpha version of storybook on a react-native project

[codecov]

Codecov Report

Merging #6182 into next will increase coverage by 0.1%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##             next    #6182     +/-   ##
=========================================
+ Coverage   37.93%   38.04%   +0.1%     
=========================================
  Files         645      643      -2     
  Lines        9626     9421    -205     
  Branches      352     1344    +992     
=========================================
- Hits         3652     3584     -68     
+ Misses       5927     5269    -658     
- Partials       47      568    +521

Impacted Files	Coverage Δ
app/react-native/src/preview/index.js	0% <ø> (ø)	⬆️
app/react-native/src/index.js	0% <0%> (ø)	⬆️
lib/ui/src/settings/shortcuts_page.js	0% <0%> (-25%)	⬇️
lib/ui/src/containers/panel.js	14.28% <0%> (-19.05%)	⬇️
lib/ui/src/containers/nav.js	11.76% <0%> (-4.91%)	⬇️
addons/notes/src/Panel.tsx	39.62% <0%> (-4.28%)	⬇️
app/polymer/src/client/index.js	0% <0%> (ø)	⬆️
app/html/standalone.js	0% <0%> (ø)	⬆️
lib/core/src/server/config.js	0% <0%> (ø)	⬆️
lib/core/src/server/cli/prod.js	0% <0%> (ø)	⬆️
... and 229 more

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[shilman]

👍 thanks @rmevans9!!!