[CX] Explain plan button fails in the Analytics workbench when query has 'SET' statement

"Explain" button returns syntax error in the Analytics Workbench if a query text contains SET statement.
To reproduce
1. Go to analytics workbench
2. Type the following query

set `inline_with` `false`;
LET x = random(), y = tostring
FROM range(1,1) r
SELECT x, y

3. Press "Explain" button

4. Error:
[

{ "code": 24000, "msg": "Syntax error: In line 1 >>explain set `inline_with` `false`;<< Encountered \"set\" at column 9. ", "query_from_user": "set `inline_with` `false`;\nLET x = random(), y = tostring(x)\nFROM range(1,1) r\nSELECT x, y" }

]

Workaround: manually add EXPLAIN after the SET statement:

set `inline_with` `false`;
EXPLAIN LET x = random(), y = tostring
FROM range(1,1) r
SELECT x, y

"Explain" button works fine with this query.