Not a consultant but generally no, a short visit to India won't invalidate your PCC. Police clearance certificates are valid for a set period from the date of issue (usually 6-12 months depending on the country and the purpose). A one month trip doesn't reset that.
That said, if you stay in India for 6+ months consecutively, IRCC may ask for a new PCC covering that period. One month is well under that threshold so you should be fine.
Also just noticed your dates might have a typo. You said PCC from April 2026 and visiting in January 2026, which would be before you got the PCC.