[INTERNAL][FIX] sap.m.Tokenizer: In FF when a token is selected with the arrow buttons it doesn't show in the visible area

Original description by Diana Shtilianova - If the sapMTokenTexts fill the sapMTokenizer aria. If you try to move with the <- to the first sapMTokenText it doesn't move properly. For both BC and HCB.

Change-Id: I315fd247ec15bcc6b232a6491ed8b2c2be2f95c6
Merge "[INTERNAL][FIX] sap.m.Tokenizer: In FF when a token is selected with the arrow buttons it doesn't show in the visible area"