fix: Added isValidDate to filter date range ":"

[AlexandreLumertz]

In this pull request it was changed to only work for numbers:
#176

But what about date filters that previously worked?
Example: 2024/01/05:2024/01/10

[HarryPaulo]

@ankush Can you review this?

This change is very useful for analyzing reports, for example accounts receivable and payable, both reports do not have a filter by date period, so if the user needs to search by the posting date or due date column, they can do the following filtering a date range:

2024-06-04:2024-06-15