v2.21.0-rc.4

Bug Fixes

• ui5-avatar: fix accessibilityInfo for decorative mode (#13324) (0352ff0)
• ui5-datetime-picker: ensure value state header spans full popover width (#13294) (49f5afc)
• ui5-dynamic-page: hide pin button on mobile devices (#13335) (359fe49), closes #13320
• ui5-dynamic-page: prevent flickering when content is updated (#13336) (31e5f0a)
• ui5-tokenizer, ui5-multi-input,ui5-multi-combobox: Improve stylisation (#13314) (f9ff5ee)

Features

• ui5-table-cell: merged property added (#13297) (c5ec5f3), closes #7238 #7238 #7238
• update sap/icons to v5.12 & 4.24 (#13319) (0b16434)