D22397: [Fonts KCM] Alter DPI only on explicit user interaction

[Kai Uwe Broulik]

broulik created this revision.
broulik added a reviewer: Plasma.
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REVISION SUMMARY
  The settings are loaded after the QML is created, and once it is loaded, it becomes indeterministic which property (checkbox checked or spinbox value) is re-evaluated first and the `Binding` ends up resetting the config.

TEST PLAN
  Opened Fonts KCM, DPI 192 was properly shown, changed some other font settings, my DPI did not change
  Changed font DPI, worked fine. Checking and unchecking also works fine. When unchecking it resets the value to 96

REPOSITORY
  R119 Plasma Desktop

REVISION DETAIL
  https://phabricator.kde.org/D22397

AFFECTED FILES
  kcms/fonts/package/contents/ui/main.qml

To: broulik, #plasma
Cc: plasma-devel, LeGast00n, jraleigh, fbampaloukas, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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