♻️ Refactor code: RAS/RAF alterations in colorectal c…

[SAHU-01]

Fix cBioPortal/cbioportal#10780(see https://help.github.com/en/articles/closing-issues-using-keywords)

Describe changes proposed in this pull request:

• To maintain the gene structure in case of an OQL query deletion, a condition was set, if the deleted gene track has a sublabel after it's deletion a new line must be added to the existing genes. But when no sublabel is present a default sublabel for '' always gets assigned in application. For the first time when remove track was clicked in RAS/RAF, it added a new line[following oql query logic because '' is also a sublabel] , and on second removal I removed the gene. To fix this issue this condition which always in the presence of a sublabel adds a new line first has to be modified
• To modify the condition, in case of oql queries, specially in the query params of genelist '%20' is present, on adding this check alongside if a sublabel is present, the new line addition logic now works only for oql queries, and the other remove tracks not affected.

Checks

• Has tests or has a separate issue that describes the types of test that should be created. If no test is included it should explicitly be mentioned in the PR why there is no test.
• The commit log is comprehensible. It follows 7 rules of great commit messages. For most PRs a single commit should suffice, in some cases multiple topical commits can be useful. During review it is ok to see tiny commits (e.g. Fix reviewer comments), but right before the code gets merged to master or rc branch, any such commits should be squashed since they are useless to the other developers. Definitely avoid merge commits, use rebase instead.
• Is this PR adding logic based on one or more clinical attributes? If yes, please make sure validation for this attribute is also present in the data validation / data loading layers (in backend repo) and documented in File-Formats Clinical data section!

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[onursumer]

Thanks for working on this!

Looks like we still need to fix the issue with OQL. See cBioPortal/cbioportal#10780 (comment) for details