1.x-3.0.0-alpha8

Changes since 1.x-3.0.0-alpha7:

• Upstream commits/changes by @saschaeggi, Jay Jangid, Dieter Holvoet, Reinhard Hutter, Ben Mullins, François Noël, Mukeysh, Harish kumar, bunty oberoi, Vidushi Mehta, Stefan Borchert, Miriam Nugent, Shubham Jain, Rick Zhang, deepak sagar, Swati Dhurandhar, kksandr, Pravin Gaikwad, Simon Bäse, Andy Whale, Kevin Funk, Nicolas Morand, Holger Weischenberg, Sven Schüring, Remco Hoeneveld, Ravi Kant kumawat, and Karl Shea.
• Issue #78: Tweak on page wrapping for configuration page display. by @laryn
• Issue #89: Fix Unsupported operand types error on PHP 7.4. by @laryn and @muranod
• Issue #90: Improve density and dark mode on Views "Add Field" modal. by @laryn
• Issue #91: Reduce gap between views admin title and views displays. by @laryn
• Issue #93: Improve density and dark mode on Layout "Add Block" modal. by @laryn