feat: modernize Tooltip to the latest Material Design specs

[adrcotfas]

The goal is to modernize the Tooltip according to the latest specs - see below.

Current State

Tooltip

MD3 spec: Tooltips
Specs link: https://m3.material.io/components/tooltips/specs

Color tokens

• Container background uses theme.colors.onSurface; spec requires inverseSurface
• Text color uses theme.colors.surface; spec requires inverseOnSurface

Shape

• borderRadius: theme.roundness = 4dp matches corner.extraSmall ✅

Spacing / sizing

• Container height 32dp ✅
• Text variant is labelLarge (14sp); spec requires bodySmall (12sp)

Behavior

• Rich tooltip variant not implemented. MD3 defines two variants: plain (text only) and rich (optional title, body text, link, and action buttons). The current title: string prop cannot support rich content
• No pointer/caret indicator (not required by spec) ✅

Animation

• No enter/exit animation. MD3 specifies a fade transition on show/hide