End pillars generate without ground to generate on

The bug

For some seeds the end generates without or too less end stone beneath some obsidian pillars. This would prevent a fix for MC-86654 from working for these cases.

How to reproduce

Seed: 1194164352143763445
Coordinates: /execute in minecraft:the_end run tp @s 10.40 37.65 35.55 326.11 53.71

Seed: 3947383662603549734
Coordinates: /execute in minecraft:the_end run tp @s -0.65 53.00 -30.70 848.10 35.10 

Suggested solution

Place some end stone around y=62 when generating obsidian pillars.