fix(messagesView): Increase spacing between chat messages

[alexjba]

What does the PR do

Fix #8675

Added padding between messages as specified in Figma:
topPadding - 8 if the current message has header, 2 otherwise
bottomPadding - 8 if both current and next message have header, 2 otherwise

Affected areas

MessageView
StatusMessage

Screenshot of functionality (including design for comparison)

• I've checked the design and this PR matches it

Screen.Recording.2022-12-20.at.15.15.49.mov

[status-im-auto]

Jenkins Builds

Click to see older builds (6)

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	3b72588	#1	2022-12-20 13:37:18	~6 min	imports	📄log
✔️	3b72588	#1	2022-12-20 13:37:54	~7 min	linux-cpp	📄log
✔️	3b72588	#1	2022-12-20 13:40:35	~9 min	macos	🍎dmg
✔️	3b72588	#1	2022-12-20 13:44:56	~14 min	linux	📦tgz
✖️	3b72588	#1	2022-12-20 13:49:10	~18 min	linux-e2e	📄log
✔️	3b72588	#1	2022-12-20 13:55:12	~24 min	windows	💿exe

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	22edbf2	#2	2022-12-21 15:08:50	~4 min	imports	📄log
✔️	22edbf2	#2	2022-12-21 15:08:56	~4 min	linux-cpp	📄log
✔️	22edbf2	#2	2022-12-21 15:11:33	~7 min	macos	🍎dmg
✔️	22edbf2	#2	2022-12-21 15:13:33	~9 min	linux	📦tgz
✔️	22edbf2	#2	2022-12-21 15:25:08	~21 min	windows	💿exe
✖️	22edbf2	#2	2022-12-21 15:32:42	~28 min	linux-e2e	📄log
✔️	da0d1da	#3	2022-12-23 10:04:20	~2 min	linux-cpp	📄log
✔️	da0d1da	#3	2022-12-23 10:06:25	~4 min	imports	📄log
✔️	da0d1da	#3	2022-12-23 10:10:45	~9 min	macos	🍎dmg
✔️	da0d1da	#3	2022-12-23 10:13:00	~11 min	linux	📦tgz
✔️	da0d1da	#3	2022-12-23 10:25:14	~23 min	windows	💿exe
✔️	da0d1da	#3	2022-12-23 10:30:06	~28 min	linux-e2e	📄log