feat: clear out custom base node

[hansieodendaal]

Description

Cleared out the old custom base node in the console wallet base node list in the network tab if another one is assigned.

Note: Currently in the console wallet we only accept one custom base node, not a list. The new custom base node was added correctly and the old one removed from the database, the only issue here was that the Network tab display was not updated.

Fixes #5353

Motivation and Context

The old custom base node was not cleared from the list.

How Has This Been Tested?

System-level testing

What process can a PR reviewer use to test or verify this change?

Code review

Breaking Changes

• None
• Requires data directory on base node to be deleted
• Requires hard fork
• Other - Please specify

[github-actions]

Test Results (CI)

    3 files    129 suites   37m 16s ⏱️
1 350 tests 1 350 ✅ 0 💤 0 ❌
4 048 runs  4 048 ✅ 0 💤 0 ❌

Results for commit 78b2adb.

[github-actions]

Test Results (Integration tests)

 2 files  11 suites   34m 0s ⏱️
36 tests 34 ✅ 0 💤 2 ❌
38 runs  36 ✅ 0 💤 2 ❌

For more details on these failures, see this check.

Results for commit 78b2adb.