Calculating CIP for atoms that cannot be chiral centers

**Steps to Reproduce**
1. Go to Ketcher micromolecules mode
2. Draw the following structures:
3. Select calculate CIP

**Actual behavior**

Ketcher calculates CIP for germanium, lead and tin.

**Expected behavior**

Only carbon (C), nitrogen (N), silicon (Si), phosphorus (P), sulfur (S), arsenic (As), selenium (Se), and tellurium (Te), and their isoelectronic equivalents can be chiral centers.

An isoelectronic equivalent is an atom/ion that has the same number of electrons as some other atom/ion. For example:

Only atoms that fulfill these conditions can be chiral centers. Other conditions need to be met for CIP to be calculated. See related issue [#4754](https://github.com/epam/Indigo/issues/2678) for those conditions.

**Ketcher version v2.22.0**

No source file or test is named. Reproduce the issue in Ketcher micromolecules mode, then trace the calculate-CIP entry point and compare atom eligibility with the expected list; done means germanium, lead, and tin no longer receive CIP while the listed atoms and their isoelectronic equivalents still do.

Written by the indexing model from the issue text.