* MM-63652: Transition gossip encryption functionality to GA
Create a new config setting, and migrate the old values to new.
https://mattermost.atlassian.net/browse/MM-63652
Skip-Enterprise-PR: true
```release-note
NONE
```
* fix i18n
also fix unit tests
```release-note
NONE
```
* For fresh installations, default to true
```release-note
NONE
```
* gofmt files
```release-note
NONE
```
* Fixing some more strings
```release-note
NONE
```
* Update e2e tests
```release-note
NONE
```
* Reject emails within angle brackets
mail.ParseAddress is RFC-compliant, which means that it accepts emails
with names, as in "Billy Bob <billy@example.com>". It even accepts this
form *without* a name; e.g. "<billy@example.com>". We want to store the
plain address, so we compare the user input with the Address field of
the result from mail.ParseAddress, which should contain only
"billy@example.com", thus only accepting emails that do not contain
names nor angle brackets.
* Log a warning for admins with clear next steps
* Fix wording of comment
* And a typo
* Add specific command example to log message
* Add input email to log message
---------
Co-authored-by: Mattermost Build <build@mattermost.com>
* POC for API handler opts modifier
* Made upload POSt api a file upload API
* Specified file upload local API
* Specified file upload local API
* Specified file upload API
* Simplified handler params
* Added basic security checks
* Fixed i18n
* used type for API handler options
* Removed limited reader from util deserializers (#26263)
* update ArrayFromJSON to use LimitedReader
* update for bad merge
* fix lint errors
* update test code
* update unit tests
* update unit tests
* fix unit tests
* use consts, other cleanup
* add non sorting duplicate check
* set config to default value, then config setting if available
* fix lint errors
* fixes and debugs
* fix log test
* remove setting from Client, add unlimited Parser to client
* a couple more fixes
* another fix
* rename some variables
* remove superflous call
* check for valid MaximumPayloadSize
* update language file
* fix for e2e-tests
* update util function to return error
* lint fix
* update config property name to include unit
* fix for unit test
* add new config to telemetry
* call function to create LimitedReader
* Deprecate old function, use new function name
* return new AppError on failed parse
* return new AppError on failed parse
* return new AppError on failed parse
* add constant for i18n valid constants
* Update server/public/model/utils_test.go
Co-authored-by: Miguel de la Cruz <mgdelacroix@gmail.com>
* Apply suggestions from code review
Co-authored-by: Miguel de la Cruz <mgdelacroix@gmail.com>
* update error variable, remove unnecessary check
* Update function names
* fix errors from merge
* update unit test to create unique ids
---------
Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: Miguel de la Cruz <mgdelacroix@gmail.com>
