- in favor of useCurrentEuiBreakpoint

- in favor of hook

…e resize observer

- since getBreakpoint is now deprecated, we're only looking at the current EUI breakpoint (based off window width)

- Setup for custom xl+ breakpoint sizes used by APM and Synthetics

- since getBreakpoint is no longer an usable util

- EUI's new breakpoint hooks already use/debounce window resize events, so we now get to skip all that custom logic by simply making custom EUI breakpoint overrides and using EUI breakpoint hooks

- remove returned `breakpoint` and `width` keys - they weren't actually being used anywhere in APM that I could see and were causing type errors.
- If someone wants to access them, they can use `useCurrentEuiBreakpoint` and `useWindowSize` individually instead

- basically the exact same logic, they just also need the xxl and xxxl breakpoints

…ooks

+ add xxl and xxxl breakpoints to Synthetics EUI themes

- `useBreakpoints`: - as far as I can tell, all attached APIs are basically the same APIs that EUI provides OOTB:
  - up -> `useIsWithinMinBreakpoint`
  - down -> `useIsWithinMaxBreakpoint`
  - between -> `useIsWithinBreakpoints`
  - debouncedWidth - not used, but could just use `useWindowSize` directly instead

- note: i'm confused by the `xl` override/conflation with `xxl`, but left the default xl breakpoint size as-is and assumed that all usage instances of 'xl' actually wanted 'xxl'

- functionally doesn't matter since the array doesn't include undefined, so basically just silence TS complaining about it

… vs table resize observer"

This reverts commit 4e60ce2.

- by replacing the breakpoint logic/switch with custom breakpoint sizes and names

- since the table size can be within panels that don't match `window.innerWidth`, we can't use EUI's breakpoint utils here

- because of their new custom xxl/xxxl breakpoints, the `isLargerBreakpoint` logic was broken on the shared solution nav. switching to a min breakpoint bound fixes the issue and futureproofs the solution nav for all apps that add larger breakpoints than xl

…na into feature/tpierce-eui-64.0.1

…kpoints

- per discussion with Quynh and Walter, there's some confusion around the breakpoints that the table is using. Since the table is width is not always the width of the browser window, it cannot use EUI's breakpoint hooks, and should instead use its own custom map of table-specific breakpoints to make that separation clearer

…-ref HEAD~1..HEAD --fix'