[Epic] Add compatibility tests for update operators and writeAggregateStages.

[SarthakDalmia1]

Write comprehensive tests for the following update operators:
$currentDate
$inc
$min
$addToSet
$mul
$rename
$
$[]
$[]
$max
$pop
$pull
$push
$pullAll
$each
$position
$slice
$sort
$bit

And for the following WriteAggregateStages:
$merge
$out

And for the following query operator:
$text

[documentdb-triage-tool]

🤖 Auto-triaged by documentdb-triage-tool.

Applied: compatibility test, enhancement
Project fields suggested: Component test-coverage · Priority P2 · Effort XL · Status Triage
Confidence: 0.88 (llm)

Reasoning

LLM: Large epic requesting comprehensive compatibility test coverage across ~20 update operators, 2 write aggregate stages, and 1 query operator — spans many test files and multiple operator categories.

If a label is wrong, remove it manually and ping @patty-chow so the rules can be tuned. The bot will not re-label items that already have component labels.

[SarthakDalmia1]

/take

[github-actions]

@SarthakDalmia1 Sorry, only org members or collaborators can self-assign issues.