ui: disable spellchecker for screenshot tests

Somehow they behave inconsistently on the new CI

Change-Id: I8b96f355e51061b471fe050e9827ea4e8126cf5c

test/data/ui-screenshots/queries.test.ts/omnibox-query/query-mode.png.sha256

diff --git a/test/data/ui-screenshots/queries.test.ts/omnibox-query/query-mode.png.sha256 b/test/data/ui-screenshots/queries.test.ts/omnibox-query/query-mode.png.sha256
index 091beae..9fda521 100644
--- a/test/data/ui-screenshots/queries.test.ts/omnibox-query/query-mode.png.sha256
+++ b/test/data/ui-screenshots/queries.test.ts/omnibox-query/query-mode.png.sha256
@@ -1 +1 @@
-7d369bd3b5195230dd3e2e6ded2730c45b2c9a682f0029ad850b8a4002f7e734
\ No newline at end of file
+5b8aee2ab91c09097fd8ee31f6671305034a5bb1650a9a42dde4d709acc04220
\ No newline at end of file

ui/playwright.config.ts

diff --git a/ui/playwright.config.ts b/ui/playwright.config.ts
index 62f592e..e1b8d53 100644
--- a/ui/playwright.config.ts
+++ b/ui/playwright.config.ts
@@ -67,6 +67,7 @@
             '--disable-font-subpixel-positioning',
             '--disable-gpu',
             '--disable-lcd-text',
+            '--disable-spell-checking',
             '--font-render-hinting=none',
             '--force-device-scale-factor=1',
             '--hide-scrollbars',