Splitter panes shrink or expand vertically and breaking the Splitter layout

[dimodi]

Describe the bug

The height:100% style of Splitter panes is causing unexpected behaviors.

• In horizontal Splitters with no height, the panes shrink vertically.
• In vertical Splitters with no height, the panes can expand too much and overflow the Splitter. Other panes may disappear completely.

To reproduce

https://blazorrepl.telerik.com/mSEhlrYZ542NZdzn21

• Clear the Size of the first pane
• Toggle the Splitter orientation to Vertical
• The Middle pane will disappear.

https://blazorrepl.telerik.com/GSYhviuW09q5sa6j29

• Remove the Splitter height
• The panes will shrink vertically

Expected behavior

• Panes in a horizontal Splitter always expand to match the Splitter height.
• Panes in a vertical Splitter do not overflow or squash other panes.

Affected package (please remove the unneeded items)

• All

Affected suites (please remove the unneeded items)

• All

Affected browsers (please remove the unneeded items)

• All

Build system information (please remove the unneeded items)

• Not Applicable

Additional context

Related to telerik/kendo-angular#1264