[JEWEL-1075] Fix crash in ScrollableContainer when used with IntrinsicSize

[DanielSouzaBertoldi]

(this description was generated by jewel-pr-preparer)

Context

VerticallyScrollableContainer (and its horizontal counterpart) crashed with IllegalArgumentException when being used inside a Composable that expects IntrincisSize. This is the crash stacktrace:

Caused by: java.lang.IllegalArgumentException: Can't represent a width of 0 and height of 2147483647 in Constraints
	at androidx.compose.ui.unit.ConstraintsKt.throwInvalidConstraintException(Constraints.kt:401)
	at androidx.compose.ui.unit.ConstraintsKt.createConstraints(Constraints.kt:425)
	at androidx.compose.ui.unit.Constraints$Companion.fixedHeight-OenEA2s(Constraints.kt:244)
	at org.jetbrains.jewel.ui.component.ScrollableContainerKt$ScrollableContainerImpl$2$1.measure-3p2s80s(ScrollableContainer.kt:779)
	at androidx.compose.ui.layout.MeasurePolicy.maxIntrinsicHeight(MeasurePolicy.kt:164)
	at androidx.compose.ui.node.IntrinsicsPolicy.maxIntrinsicHeight(IntrinsicsPolicy.kt:53)
	at androidx.compose.ui.node.LayoutNode.maxIntrinsicHeight(LayoutNode.kt:764)
	at androidx.compose.ui.node.InnerNodeCoordinator.maxIntrinsicHeight(InnerNodeCoordinator.kt:140)

Compose's default MeasurePolicy intrinsic fallback re-runs the measure block with Constraints.Infinity on the queried axis. The old implementation used a SAM lambda for Layout { }, so the measure block would run during intrinsic queries. Inside that block, the scrollbar was being measured with Constraints.fixedHeight(Int.MAX_VALUE), an illegal Constraints value that throws immediately.

Changes

• Changed the measurement order in ScrollableContainer: instead of measuring scrollbars with Constraints.fixedHeight/Width(Int.MAX_VALUE) to query their size, the implementation now queries scrollbar intrinsic sizes first by converting the Layout SAM lambda to an explicit MeasurePolicy object with proper intrinsic overrides, then measures content, then measures scrollbars with concrete dimensions.
• This alone was not enough; the scrollbar Layout lambdas in Scrollbar.kt were themselves using SAM lambdas with no intrinsic overrides as well, so Compose's default fallback would re-run their measure blocks with
  Constraints.Infinity, causing the same crash one level deeper. Both verticalMeasurePolicy and horizontalMeasurePolicy were converted to explicit MeasurePolicy objects that report thumbThickness as the intrinsic size on their fixed axis and 0 on the scroll axis.
• Added check() assertions (matching LazyColumn's behavior) that throw IllegalStateException with a descriptive message when the scroll axis has an unbounded constraint during actual layout, giving developers clear guidance instead of a cryptic crash deep in Compose internals.
• Added comprehensive tests to ScrollableContainerTest covering: no crash in IntrinsicSize.Max/IntrinsicSize.Min parents, correct reported intrinsic dimensions (including scrollbar space for the macOS AlwaysVisible style), scrolling still works after the fix, and unbounded-axis nesting produces the expected IllegalStateException.

Release notes

Bug fixes

• VerticallyScrollableContainer and HorizontallyScrollableContainer no longer crash with IllegalArgumentException when placed inside a layout that queries intrinsic measurements.