fixes [`showDateRangePicker` interactive sample not loading](#144474)

### Description 

This fixes `showDateRangePicker` example not loading in Dartpad.

Similar fix was made for `showDatePicker` in #99401

flutter/packages@6d02f03...a9c68b8

2024-03-01 49699333+dependabot[bot]@users.noreply.github.com Bump github/codeql-action from 3.24.5 to 3.24.6 (flutter/packages#6234)
2024-02-29 [email protected] [various] Standardize Obj-C doc comment style (flutter/packages#6232)
2024-02-29 [email protected] [google_maps_flutter] Add support for marker clustering - platform interface (flutter/packages#6158)
2024-02-29 [email protected] Roll Flutter (stable) from abb292a to 7482962 (1 revision) (flutter/packages#6230)
2024-02-29 [email protected] Roll Flutter from d00bfe8 to e92bca3 (15 revisions) (flutter/packages#6227)

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…144480)

flutter/engine@2a5a9a6...8ef8543

2024-03-01 [email protected] Roll Skia from b44ad3d40f54 to a57372ca2e66 (1 revision) (flutter/engine#51122)

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Context: @godofredoc pointed out that the fields in the PR template could be simplified and redesigned. Synced with @itsjustkevin and Kevin come up with [changes in this doc](https://docs.google.com/document/d/1Slppqq32toSwwxUyYTX1t6dGUQpyi0xEWxw4niGWspc/edit?resourcekey=0-v6U_9XVsMFSx0Fvx1rANhg&tab=t.0) which would improve the cherry pick template.

Github only supports a limited number of formatting options. This PR uses some workarounds and makes the following changes:
1. use divider to replace text area since Github markdown doesn't support text area
2. remove \<pre\> tags so texts can wrap around
3. use headings over bold
4. use task lists to identify the starting points of user answers

An example cherry pick template would [look like this](#143785) after the change.

…144493)

flutter/engine@8ef8543...2706c73

2024-03-01 [email protected] [Impeller] ASAN/LSAN fixes for the mock Vulkan implementation (flutter/engine#51115)

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