Now that VST3 builds are signed before and after manifest generation, it
may be necessary to force-sign in order to overwrite the
previously-applied signature.

This makes it consistent between Windows and MacOS. This is restoring
the behaviour prior to 7e404118b5.

Co-authored-by: Tatsuya Shiozawa <shio.tatsu99@gmail.com>

Co-authored-by: Tobias Hienzsch <post@tobias-hienzsch.de>

To prevent too much disruption to people who have our public projects as
part of their build or testing systems we are temporarily ignoring a
warning about using Xcode 15.

The accessibilityValue method of the AccessibilityCheckBox and
AccessibilityRadioButton protocols is required to return a
boolean valued NSNumber.

This allows defining JUCE_LOG_CURRENT_ASSERTION when using Visual
Studio, where escaping semicolons in the command-line is not possible.