[11.x] Simplify hasNotFailedPreviousRuleIfPresenceRule , getDateTimestamp methods

[saMahmoudzadeh]

First Change:

Refactored the getDateTimestamp method to use the nullsafe operator (?->) directly on the result of getDateTime($value). This change eliminates the need for an explicit null check and simplifies the code.

• Removed is_null check and redundant null assignment.
• Directly returned the timestamp using the null-safe operator for clarity and conciseness.

Second Change:

Refactored the hasNotFailedPreviousRuleIfPresenceRule method to simplify the condition by replacing the ternary operator with a direct logical OR (||) expression. This change makes the code more readable and reduces unnecessary complexity.

• Removed the ternary operator and replaced it with a logical OR.
• Improved readability and performance by avoiding redundant conditions.