[Console] fixed style creation when providing an unknown tag option
bug #11609 [Console] fixed style creation when providing an unknown tag option (fabpot)

This PR was merged into the 2.3 branch.

Discussion
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[Console] fixed style creation when providing an unknown tag option

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

When formatting a string, the console ignore style it cannot parse. But if a string looks like an option (`<setting=value>`) for instance, instead of displaying the text as is, it currently throws an exception.

Commits
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8814920 [Console] fixed style creation when providing an unknown tag option