Put defaultMailHeaderColor back

[VicDeo]

this line was unintentionally removed in #31683

[PVince81]

👍 sadly no unit test caught this ?

[VicDeo]

@PVince81 AFAIK It's a matter of style. PHP emits a notice (depending on php.ini) and consider missing property to be public.

[codecov]

Codecov Report

Merging #31701 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master   #31701   +/-   ##
=========================================
  Coverage     62.91%   62.91%           
  Complexity    18424    18424           
=========================================
  Files          1156     1156           
  Lines         69184    69184           
  Branches       1260     1260           
=========================================
  Hits          43527    43527           
  Misses        25288    25288           
  Partials        369      369

Flag	Coverage Δ	Complexity Δ
#javascript	52.39% <ø> (ø)	0 <ø> (ø)	⬇️
#phpunit	64.12% <ø> (ø)	18424 <ø> (ø)	⬇️

Impacted Files	Coverage Δ	Complexity Δ
lib/private/legacy/defaults.php	46.46% <ø> (ø)	40 <0> (ø)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b08fce1...8a8c9b0. Read the comment docs.

[phil-davis]

Needs to be in with the other PR backport, I guess.

[VicDeo]

Already in #31699

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.