Add flow suppressions to xplat android

Summary:
.android.js files may be checked (when the next version of flow is released) by using `flow start --flowconfig-name .flowconfig.android` and `flow status --flowconfig-name .flowconfig.android`

This diff adds suppressions to the errors that are in .android.js files, which flow does not check right now.

When site is `react_native_fb` or `react_native_android_fb`, error will be suppressed when checking with .flowconfig.android
When site is `react_native_fb` or `react_native_ios_fb`, error will be suppressed when checking with .flowconfig.

You can use `react_native_fb` when it should be suppressed for both.

The controller you requested could not be found.

Reviewed By: TheSavior

Differential Revision: D9122178

fbshipit-source-id: 0ec9d3cae3d887f58645e6585b2a3f6c3889b13e

RNTester/js/ProgressBarAndroidExample.android.js

@@ -48,6 +48,8 @@ class ProgressBarAndroidExample extends React.Component<{}> {
     return (
       <RNTesterPage title="ProgressBar Examples">
         <RNTesterBlock title="Horizontal Indeterminate ProgressBar">
+          {/* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was
+            * found when making Flow check .android.js files. */}
           <ProgressBar styleAttr="Horizontal" />
         </RNTesterBlock>
 
@@ -56,6 +58,8 @@ class ProgressBarAndroidExample extends React.Component<{}> {
         </RNTesterBlock>
 
         <RNTesterBlock title="Horizontal Black Indeterminate ProgressBar">
+          {/* $FlowFixMe(>=0.78.0 site=react_native_android_fb) This issue was
+            * found when making Flow check .android.js files. */}
           <ProgressBar styleAttr="Horizontal" color="black" />
         </RNTesterBlock>