HTML Widgets; widget.UI.Grid; Filter Box styling brought in line with finPOWER Connect Cloud and looks better for "Public1" and "SemUI" styles

The filter box that can be displayed above a grid (generally by right-clicking the grid and selecting "Show Filter Box") has been updated as follows:

• The font for the X has been updated to be in line with changes made to finPOWER Connect Cloud
• The control now looks better when using the "Public1" and "SemUI" styles. Previously, the text and placeholder text were too large and vertically aligned incorrectly.