Plus and Minus Signs Removed from Labels in TSV Files

[yoshiF7d]

Describe the bug When uploading a TSV expression file containing labels with plus (+) or minus (-) signs, the signs are removed during the import process.

To Reproduce

1. Create a sample.tsv file with the following content:

   ID  A_1+    A_1-
   a   1   2
   b   3   4

2. Upload the sample.tsv file at the "Load Data/Expression matrix (CSV, text, or xlsx)" section.
3. Observe that the labels are changed to "A_1" and "A_11"

Expected behavior The minus and plus signs used in the labels should be preserved during the upload process.