MOBILE-180: Trim operationsDomain config value before blank check

[justSmK]

Issue

Android trims before the blank check, so whitespace-only operations from JSON config clears stored and falls through to init → default.
iOS gated on isEmpty without trim, treated " " as invalid format,
and kept the previous value indefinitely. Bring iOS in line.

[Copilot]

Pull request overview

Aligns iOS behavior with Android by trimming whitespace from the operationsDomain config value before the blank check in OperationsDomainConfigPolicy.action(for:currentlyStored:). Previously, whitespace-only strings were treated as a valid (but malformed) value, causing iOS to keep the previous stored value indefinitely instead of clearing it.

Changes:

• Trim raw with .whitespacesAndNewlines before the empty check so whitespace-only inputs flow through the empty branch (clear or keep).
• Add tests covering whitespace-only inputs (clear when stored, keep when nothing stored) and surrounding-whitespace trimming with canonicalization.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
Mindbox/InAppMessages/Configuration/Services/OperationsDomainConfigPolicy.swift	Trim incoming raw value before the empty/blank guard.
MindboxTests/Network/OperationsURLRoutingTests.swift	New tests for whitespace-only and surrounding-whitespace cases.

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