Feature: Add option to hide inner arrows in daterangepicker/month range picker

[mihirpatel1308]

Feature request

Problem

Currently, bsDaterangepickerInline and month range picker show navigation arrows on both the left and right calendars.
This results in "inner arrows" between the two calendars, which are sometimes confusing or unnecessary.

Developers often override CSS to hide these arrows, but this approach is brittle and depends on internal DOM structure, which may change in future releases.

Proposed Solution

Introduce a new config option in BsDatepickerConfig:

hideInnerArrows?: boolean = false;