[FIX] spreadsheet: fix button height

Before this commit, the height of `o-button` elements was fixed to 32px,
which is not enough for some content, for example when the text is
on two lines (conditionnal formatting side panel for instance).

closes #7460

Task: 5253888
Signed-off-by: Adrien Minne (adrm) <adrm@odoo.com>

Author: pro-odoo

src/components/spreadsheet/spreadsheet.ts

@@ -239,7 +239,7 @@ css/* scss */ `
     border-radius: 4px;
     font-weight: 500;
     font-size: 14px;
-    height: 32px;
+    min-height: 32px;
     line-height: 16px;
     flex-grow: 1;
     background-color: ${BUTTON_BG};