refactor: Improve placement of $FlowExpectedErrors in @babel/* packages

[hyperupcall]

• Links to documentation: N/A
• Link to GitHub or NPM: N/A
• Type of contribution: refactor

This improves the placement of various $FlowExpectedErrors so they actually apply. Error id's were also added

BEFORE

$ node cli/dist/cli.js run-tests @babel/'*' --numberOfFlowVersions 1
Running definition tests against latest 1 flow versions in /home/edwin/Documents/Repositories/fox-forks/flow-typed/definitions...

Fetching all Flow binaries...
Finished fetching Flow binaries.

Testing @babel/code-frame_v7.x.x/flow_v0.104.x- (flow-v0.224.0)...
Testing @babel/polyfill_v7.x.x/flow_v0.104.x- (flow-v0.224.0)...
Testing @babel/register_v7.x.x/flow_v0.104.x- (flow-v0.224.0)...
 
ERROR: @babel/polyfill_v7.x.x/flow_v0.104.x-
* @babel/polyfill_v7.x.x/flow_v0.104.x- (flow-v0.224.0): Unexpected Flow errors (0):
    
    Warning ------------------------------------------------------------------------------------ test_polyfill_v7.x.x.js:7:1
    
    Suppression is missing a code. Please update this suppression to use an error code: `$FlowFixMe[missing-export]`
    
       7| // $FlowExpectedError does not export anything
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    
    
    
    Found 1 warning
    

ERROR: @babel/register_v7.x.x/flow_v0.104.x-
* @babel/register_v7.x.x/flow_v0.104.x- (flow-v0.224.0): Unexpected Flow errors (2):
    
    Error ------------------------------------------------------------------------------------- test_register_v7.x.x.js:26:9
    
    Cannot call `require(...)` with object literal bound to `options` because in array element of property `plugins`:
    [incompatible-call]
     - Either number [1] is incompatible with string [2].
     - Or number [1] is incompatible with tuple type [3].
    
       test_register_v7.x.x.js:26:9
       26|         123
                   ^^^ [1]
    
    References:
       register_v7.x.x.js:28:40
       28|     plugins?: Array<[string, Object] | string>,
                                                  ^^^^^^ [2]
       register_v7.x.x.js:28:21
       28|     plugins?: Array<[string, Object] | string>,
                               ^^^^^^^^^^^^^^^^ [3]
    
    
    Error ------------------------------------------------------------------------------------ test_register_v7.x.x.js:31:16
    
    Cannot call `require(...)` with object literal bound to `options` because string [1] is incompatible with array type [2]
    in property `plugins`. [incompatible-call]
    
       test_register_v7.x.x.js:31:16
       31|       plugins: 'my-plugin'
                          ^^^^^^^^^^^ [1]
    
    References:
       register_v7.x.x.js:28:15
       28|     plugins?: Array<[string, Object] | string>,
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
    
    
    Warning ------------------------------------------------------------------------------------ test_register_v7.x.x.js:6:5
    
    Suppression is missing a code. Please update this suppression to use an error code: `$FlowFixMe[prop-missing]`
    
       6|     // $FlowExpectedError does not accept unknown props
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    
    
    Warning ----------------------------------------------------------------------------------- test_register_v7.x.x.js:23:5
    
    Unused suppression comment.
    
       23|     // $FlowExpectedError no numbers
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    
    
    Warning ----------------------------------------------------------------------------------- test_register_v7.x.x.js:29:5
    
    Unused suppression comment.
    
       29|     // $FlowExpectedError should be array
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    
    
    
    Found 2 errors and 3 warnings
    
    Only showing the most relevant union/intersection branches.
    To see all branches, re-run Flow with --show-all-branches

AFTER

$ run-tests @babel/'*' --numberOfFlowVersions 1
Running definition tests against latest 1 flow versions in /home/edwin/Documents/Repositories/fox-forks/flow-typed/definitions...

Fetching all Flow binaries...
Finished fetching Flow binaries.

Testing @babel/code-frame_v7.x.x/flow_v0.104.x- (flow-v0.224.0)...
Testing @babel/polyfill_v7.x.x/flow_v0.104.x- (flow-v0.224.0)...
Testing @babel/register_v7.x.x/flow_v0.104.x- (flow-v0.224.0)...
 
All tests passed!