[FIX] web_widget_x2many_2d_matrix: Do not fail when using float_time …

[katyukha]

This PR seems to fix following error:

UncaughtPromiseError > OwlError
Uncaught Promise > Invalid props for component 'X2ManyField': unknown key 'canCreate', unknown key 'canOpen', unknown key 'canWrite', unknown key 'canQuickCreate', unknown key 'canCreateEdit', 'context' is missing (should be a object)
OwlError: Invalid props for component 'X2ManyField': unknown key 'canCreate', unknown key 'canOpen', unknown key 'canWrite', unknown key 'canQuickCreate', unknown key 'canCreateEdit', 'context' is missing (should be a object)
    Error: Invalid props for component 'X2ManyField': unknown key 'canCreate', unknown key 'canOpen', unknown key 'canWrite', unknown key 'canQuickCreate', unknown key 'canCreateEdit', 'context' is missing (should be a object)
        at Object.validateProps (http://localhost:17001/web/assets/debug/web.assets_web.js:10744:19) (/web/static/lib/owl/owl.js:3160)
        at X2Many2DMatrixRenderer.template (eval at compile (http://localhost:17001/web/assets/debug/web.assets_web.js:13283:20), <anonymous>:61:21) (/web/static/lib/owl/owl.js:5699)
        at Fiber._render (http://localhost:17001/web/assets/debug/web.assets_web.js:9313:38) (/web/static/lib/owl/owl.js:1729)
        at Fiber.render (http://localhost:17001/web/assets/debug/web.assets_web.js:9305:18) (/web/static/lib/owl/owl.js:1721)
        at ComponentNode.initiateRender (http://localhost:17001/web/assets/debug/web.assets_web.js:9985:23) (/web/static/lib/owl/owl.js:2401)

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Not sure if this is correct way to fix it, but it seems that it works.

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Thank you for you PR (OCA#3117)