trig error when instance deprecated class

add change log note

mark deprectated class test as skipped

cs fix

Adjust error_reporting to allow deprecation messages for 3.0

Add deprecation message for Process

add deprecation log (#12618)

[Stopwatch] added __toString on StopwatchEvent

remove skipped test mark

[Validator] [Deprecated] add a deprecation note about ElementMetadata #12682

fix cs

fix trigger error location

fix trigger error location 2

rename deprecated message
Merge branch '12682' of github.com:davidromani/symfony into 12682