Accurate sizes: Add ancestor block context

[mukeshpanchal27]

Summary

This PR add the ancestor block context for image and cover block that help to calculation of img sizes attributes.

See #1511

The context for ancestor block after the PR.

Group > Image

Array(
    [0] => Array( [core/columns] => default ),
)

Columns > Column > Image

Array(
    [0] => Array( [core/columns] => default ),
    [1] => Array( [core/column] => 100%)
)

Group > Columns > Column ( 50% ) > Image

Array(
    [0] => Array( [core/group] => default ),
    [1] => Array( [core/columns] => default ),
    [2] => Array( [core/column] => 50%)
)

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 10 lines in your changes missing coverage. Please review.

Please upload report for BASE (feature/1511-incorporate-layout-constraints-from-ancestors@3671902). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...ns/auto-sizes/includes/improve-calculate-sizes.php	68.96%	9 Missing ⚠️
plugins/auto-sizes/hooks.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                                      Coverage Diff                                      @@
##             feature/1511-incorporate-layout-constraints-from-ancestors    #1795   +/-   ##
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  Coverage                                                              ?   57.53%           
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  Files                                                                 ?       84           
  Lines                                                                 ?     6544           
  Branches                                                              ?        0           
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  Hits                                                                  ?     3765           
  Misses                                                                ?     2779           
  Partials                                                              ?        0           

Flag	Coverage Δ
multisite	57.53% <66.66%> (?)
single	34.65% <66.66%> (?)

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