feat(Probability): Countable infimum of stopping times is a stopping time

[kex-y]

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• depends on: feat(Probability): Right continuous filtrations #33371

[github-actions]

PR summary f65bc60cde

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

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Declarations diff

+ HasUsualConditions
+ HasUsualConditions.measurableSet_of_null
+ IsRightContinuous
+ IsRightContinuous.eq
+ IsRightContinuous.measurableSet
+ biInf
+ iInf
+ instance {𝓕 : Filtration ι m} {μ : Measure Ω} [u : HasUsualConditions 𝓕 μ] {i : ι} :
+ isRightContinuous_rightCont
+ isStoppingTime_of_measurableSet_lt_of_isRightContinuous
+ isStoppingTime_of_measurableSet_lt_of_isRightContinuous'
+ le_rightCont
+ rightCont
+ rightCont_def
+ rightCont_eq
+ rightCont_eq_of_exists_gt
+ rightCont_eq_of_isMax
+ rightCont_eq_of_neBot_nhdsGT
+ rightCont_eq_of_nhdsGT_eq_bot
+ rightCont_eq_of_not_isMax
+ rightCont_eq_self
+ rightCont_self

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

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No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[mathlib4-dependent-issues-bot]

This PR/issue depends on:

• feat(Probability): Right continuous filtrations #33371
  By Dependent Issues (🤖). Happy coding!