[PLAT-8476] Allow internal error reporting to be disabled

[nickdowell]

Goal

Allow internal error reporting to be disabled.

Changeset

Adds telemetry property to BugsnagConfiguration which contains a single "internal errors" option, enabled by default.

Skips initialization of BSGInternalErrorReporter if option is disabled.

Testing

Adds E2E scenario to verify that internal errors are not sent when option is disabled.

[github-actions]

Bugsnag.framework binary size increased by 408 bytes from 819,856 to 820,264

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.1%    +232  +0.1%    +232    String Table
  +0.1%    +192  +0.1%    +192    Symbol Table
  +0.0%    +112  +0.0%    +112    __TEXT,__text
  +0.2%     +96  +0.2%     +96    __DATA,__objc_const
  +0.2%     +52  +0.2%     +52    __TEXT,__objc_methname
  +0.2%     +16  +0.2%     +16    __DATA,__objc_selrefs
  +0.4%      +8  +0.4%      +8    Function Start Addresses
  +0.4%      +4  +0.4%      +4    __DATA,__objc_ivar
  +0.1%      +1  +0.1%      +1    __TEXT,__objc_classname
  -0.3%     -24  -0.3%     -24    Export Info
  -1.5%    -116  -0.8%    -116    [__DATA]
  -1.1%    -165  -1.1%    -165    [__TEXT]
  [ = ]       0  -2.6%    -408    [__LINKEDIT]
  +0.0%    +408  [ = ]       0    TOTAL

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